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1. A survey found that women's heights are normally distributed with mean 63.9 in and standard deviation 2.4in. A branch of the
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   2. 24 views
2. The heights of adult men in America are normally distributed, with a mean of 69.7 inches and a standard deviation of 2.65
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3. What is the minimum probability of success needed in order to use normal approximations for an estimate about a population,
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4. Which of the following is NOT a characteristic of the normal distribution?A) It is bell-shaped and symmetrical. B) The total
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   2. asked by College Student
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5. A set of data has a normal distribution with a mean of 51 and a standard deviation of 8. Find the percent of data within the
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6. A set of data has a normal distribution with a mean of 46 and a standard deviation of 9. Find the percent of data within the
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7. A researcher determined that the heights of male students in aparticular town are normally distributed with a mean of 63 inches
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8. Scores on a certain test are normally distributed with a mean of 77 and a standard deviation of 6. Find:the percentage of test
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9. Scores on a certain test are normally distributed with a mean of 71 and a standard deviation of 10. Find:the percentage of test
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10. Scores on a certain test are normally distributed with a mean of 78 and a standard deviation of 10. Find:the percentage of test
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11. A sample of n = 100 observations is drawn from a normal population with and . Find0.0062 0.1027 0.0146 0.9854 0.9938
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12. If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal
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13. QUESTION 49For the standard normal distribution determine the probability of the following Z - score: Between -2.3 and -1.9
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14. he lifetimes of a certain brand of light bulbs are known to be normally distributed with a mean of 1600 hours and a standard
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15. Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.5feet and a standard deviation of
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16. To qualify as a contestant in a​ race, a runner has to be in the fastest​ 16% of all applicants. The running times are
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17. Betty’s Bite-Size Candies are packaged in bags. The number of candies per bag is normally distributed, with a mean of 50
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    2. 50 views
18. a) The average height of sunflowers in a field is 64 in. with a standard deviation of 3.5 in. On a piece of paper, draw a normal
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    2. asked by bot
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19. Use the table to answer the question. Note: Round z-scores to the nearest hundredth and then find the required A values using
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    2. asked by math
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20. Use the table to answer the question. Note: Round z-scores to the nearest hundredth and then find the required A values using
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    2. asked by math
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21. The number of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What
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    2. asked by yrlfukycjh
    3. 51 views
22. In just a couple sentences answer the following questionsa) The average height of sunflowers in a field is 64 in. with a
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    2. 29 views
23. The height of women are normally distributed with a mean of 66 inches and a standard deviation of 2.6 inches. Use a graphing
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    2. 32 views
24. Lydia collected samples to see how many cars passed by her house in a period of 5 minutes. This is the data that she collected:1
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    2. 51 views
25. When Carson runs the 400 meter dash, his finishing times are normally distributed with a mean of 76 seconds and a standard
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    2. 63 views
26. Lydia collected samples to see how many cars passed by her house in a period of 5 minutes. This is the data that she collected:
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    2. 37 views
27. Mona is given the model N(1400, 200) for a set of 50 data and wants to make some predictionsAbout how many data points should
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28. On a standardized exam, the scores are normally distributed with a mean of 40 and a standard deviation of 5. Find the z-score of
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    2. 52 views
29. Jayla is given the model N(361, 18) for a set of 75 data values and wants to determine if a normal model would be a good fit for
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    2. 73 views
30. Mona is given the model N(1400,200)for a set of 50 data and wants to make some predictions. About how many data points should
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    2. asked by Anonymous
    3. 29 views
31. Find the p( -1,75 < z < - 1,04 )if the random variable Z is from a standard normal population.A)0,2919 B)0,2190 C)0,1091
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32. True or False: Any set of normally distributed data can be transformed to its standardized form.True False
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33. Within a population, score has a normal distribution with a mean of mu = 100 and a standard deviation of sigma = 15 Apply the
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    2. 57 views
34. The heights of 3-year-olds at a preschool averaged 35.2 inches with a standard deviation of 1.2inches. a.) Assuming a normal
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    2. asked by J
    3. 63 views
35. The heights of 3-year-olds at a preschool averaged 35.2 inches with a standard deviation of 1.2 inches.a.) Assuming a normal
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    2. 60 views
36. The scores on an exam are normally distributed with a mean of 77 and a standard deviation of10. What percent of the scores are
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    2. asked by J
    3. 101 views
37. Mona is given the model N(1400, 200)for a set of 50 data and wants to make some predictions. About how many data points should
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    2. 126 views
38. A normal distribution has a mean of 645.33 and a standard deviation of 12.78. Approximately 68 percent of the data will lie
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39. On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 40. Find the z-score
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40. Jayla is given the model N(361, 18)for a set of 75 data values and wants to determine if a normal model would be a good fit for
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    2. 222 views
41. Lydia collected samples to see how many cars passed by her house in a period of 5 minutes. This is the data that she collected:1
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    2. 230 views
42. A set of data has 68.4% of the data within one standard deviation of the mean. 94.6% of the data is within two standard
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43. The scores on a driver's test are normally distributed with a mean of 100. Find the score that is 2.5 standard deviations above
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44. Suppose X~N(11,4)What is the x-value that is 2-standard deviations to the right?
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45. Horn lengths of Texas longhorn cattle are normally distributed. The mean horn spread is 60 inches with a standard deviation of
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    2. asked by Tanyashand
    3. 67 views
46. Suppose the masses for a particular population of adult Eastern chipmunks are normally distributed with a population mean of 110
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    2. asked by optional
    3. 146 views
47. Suppose that 39% of the area under a standard normal curve is to the right of a-score. How much area is between the mean and
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    2. asked by Help pls
    3. 62 views
48. Suppose X~N(22.8, 2.15) and P(x > 20)=.87What is the value of z?
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49. In a certain school district in a large metropolitan area, the SAT scores over that past five years are normally distributed
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50. The average rent in a city is $1,440 per month with a standard deviation of $150. Assume rent follows the normal distribution.
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51. A small computing center has found that the number of jobs submitted per day to its computers has a distribution that is
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    2. asked by AOL
    3. 102 views
52. Using the standard normal distribution table, answer the following questions:In a study related to pregnant women, it was
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    2. asked by Yeniceli
    3. 236 views
53. Using the standard normal distribution table, answer the following questions:In a study related to pregnant women, it was
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    2. asked by vcadn
    3. 170 views
54. The graph of a normal curve is given use the graph to identify the value of backward 4 and circle with a tailThe value of
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    2. asked by Wanda
    3. 110 views
55. Which of the following statements are TRUE about the Normal Distribution? Check all that apply.a. 50% of the data values lie at
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    2. asked by pancakey-
    3. 812 views
56. 1. A set of test scores is normally distributed with a mean of 76 points and a standard deviation of 8 points. Round your
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    2. asked by bee
    3. 587 views
57. Savannah earned a score of 43 on Exam A that had a mean of 36 and a standarddeviation of 5. She is about to take Exam B that has
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    2. asked by Daniela
    3. 476 views
58. A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4.Find the corresponding standard
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    2. asked by Dyan Dimple Reyes
    3. 546 views
59. All the houses in Stanton County have a mean size of 1,650 square feet with a standard deviation of 320. Assume the distribution
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    2. asked by jessica
    3. 851 views
60. Test score are normally distributed with a mean of 500 and a standard deviation of 50. What percentage of students scored below
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    2. asked by KALEB DAVIDSON
    3. 1,486 views
61. Consider the standard normal distribution with mean μ = 0, and standarddeviation σ = 1 a. What is the probability that an
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    2. asked by onkar
    3. 1,272 views
62. A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 139.1-cm and a standard
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    2. asked by van
    3. 406 views
63. The heights of adult men in America are normally distributed, with a mean of 69.1 inches and a standard deviation of 2.62
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    2. asked by van
    3. 532 views
64. A farmer finds that the weights of sheep on his farm have a normal distribution with mean 66.4 kgand standard deviation 5.6 kg.
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    2. asked by Raj
    3. 2,161 views
65. The height , in meters, of 500 people are normally distributed with standard deviation 0.080.Given that the heights of 129 of
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    2. asked by Raj
    3. 1,464 views
66. Find the area of the standard normal distribution that lies to the left of z=-2.3. Round answer to four decimal places. B) find
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    2. asked by Jaquoria
    3. 509 views
67. Assume that a set of test scores is normally distributed with a mean of 8080 and a standard deviation of 55. Use the​
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    2. asked by Anonymous
    3. 528 views
68. 7. a factory has a machine that makes steel rods. The length of the rods that the machine makes follows a normal distribution
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    2. asked by cait
    3. 2,429 views
69. A normal distribution has a mean of 85.4 and a standard deviation of 4.88. Find the data value corresponding to the value of z
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    2. asked by ryan
    3. 550 views
70. Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We
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    2. asked by ryan
    3. 2,353 views
71. Suppose a normal distribution has a mean of 20 and a standard deviation of 4.What is the z-score value 0.52. Its standard
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    2. asked by Regina
    3. 1,171 views
72. The annual salaries of all employees at a financial company are normally distributed with a mean = $34,000 and a standard
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    2. asked by suzanne
    3. 2,030 views
73. f the life, in months, of a certain type of car battery is normally distributed with a mean of 88months and a standard deviation
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    2. asked by Bailey
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74. A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard
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    2. asked by Sylvia
    3. 3,593 views
75. Find the area under the normal curve in each of the following cases.1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51
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    2. asked by Sylvia
    3. 10,852 views
76. Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box
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    2. asked by Tana
    3. 1,998 views
77. Hi, I am having a lot of trouble with Normal Distribution. I do online school and this lesson didn't really explain how to
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    2. asked by anon
    3. 1,023 views
78. A machine packages bags of almonds. The weights of the bags are normally distributed with a mean of 14 oz and a standard
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    2. asked by shelly
    3. 1,407 views
79. 10th grade New York public school students taking a standardized English test produced test scores that were normally
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    2. asked by jill
    3. 1,336 views
80. In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal
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    2. asked by Amy
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81. (a) The test had six multiple-choice items that were scored as correct or incorrect, so the total score was an integer between 0
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    2. asked by Anonymous
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82. How do I answer: A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the
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    2. asked by Brian
    3. 908 views
83. Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95.
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    2. asked by Sally
    3. 1,314 views
84. A certain type of lightbulb is advertised to have an average lifetime of 1,000 hours. Assume the lifetimes of these lightbulbs
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    2. asked by Kerry
    3. 1,700 views
85. Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to
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    2. asked by vanessa
    3. 2,730 views
86. A set of data items is normally distributed with a mean of 70. Convert the data item to a z-score, if the standard deviation is
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    2. asked by elizabeth
    3. 3,846 views
87. I do not understand this homework at all. Any help or elaboration would be greatly appreciated. Thanks.100 juniors at Southwest
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    2. asked by Kesha
    3. 839 views
88. Suppose x has a normal distribution with sigma = 1.2. Find the minimal sample size required so that for a 95% confidence
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    2. asked by Anonymous
    3. 3,313 views
89. For a specific type of machine part being produced, the diameter is normally distributed, with a mean of 15.000 cm and a
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    2. asked by Zack
    3. 810 views
90. Across the USA, results for these exams are normally distributed. What does that mean and why is this the case?If you were to
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    2. asked by Natasha
    3. 2,394 views
91. The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 16.
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    2. asked by Noah
    3. 533 views
92. An exam is standardized to a Normal​ model, with a mean of 105 and a standard deviation of 18. Based on the Normal model
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    2. asked by Anonymous
    3. 537 views
93. It is estimated that heights of adult men are normally distributed with a mean of 70 inches and a standard deviation of 3.5. In
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    2. asked by Erin
    3. 1,269 views
94. STATISTICS: I'm struggling with how to calculate the following problems:*Assume that X~N(3,1.5) For what value of X is Pr(x<K) =
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    2. asked by BONACA
    3. 519 views
95. When Mrs. Myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. This means
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    2. asked by Jake
    3. 1,247 views
96. Suppose you have a mean standardized score of 1500 points with a standard deviation of 150 points. This data is normally
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    2. asked by Destiny
    3. 3,055 views
97. The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard
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    2. asked by phia
    3. 803 views
98. Consider the Standard Normal curve:(a) Find the area between z = -0.45 and z = 1.45 (b) Find the value of z such that the area
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    2. asked by yvonne bih
    3. 1,489 views
99. A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Australia. A scale called the
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    2. asked by Soledad
    3. 574 views
100. A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Canada. A scale called the
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     2. asked by Dany
     3. 551 views