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Newest Normal Distribution Questions

1. Given/Gegee: Z ~ N ( 0 , 1); Calculate: / Bereken:2.1 P(- 2.58 < Z < 2.52) 2.2 The value of k in. / Die waarde van k in. P(Z <
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   2. 137 views
2. You have been asked to determine the probability that the contribution margin for a particular product line exceeds the fixed
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   2. 134 views
3. Given μ=5 and σ=0.5, find the probability that a random variable, x, is between 3.6 and 6.1.A. -98.4% B. 98.6% C. 98.4 D. 1.4%
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   2. asked by m
   3. 244 views
4. Suppose X ~ N(8.5, 2.5) and P(x >11)=.13What is the probability P(8.5, x, 11)
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5. Let X be normally distributed with mean μ = 2.6 and standard deviation σ = 2.2. [You may find it useful to reference the z
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6. 1. The age of professional racecar drivers is normally distributed with a mean of 30 and a standard deviation of 6. One driver
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   2. asked by honeybee
   3. 704 views
7. The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.3 minutes and a standard deviation of 3.5
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   2. asked by debra
   3. 660 views
8. The tensile strength of paper used to make grocery bags is an important quality characteristic. It is known that the strength is
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   2. asked by matt
   3. 1,207 views
9. The time taken by a milk man to deliver milk to GOR estate is normally distributed with mean 12 minutes and standard deviation
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   2. asked by m nawaz
   3. 469 views
10. Cartons of milk from a particular supermarket are advertised as containing 1 litre of milk,but in fact the volume of the milk in
    1. 1 answer
    2. asked by Raj
    3. 995 views
11. 1.Find P(Z<-1.97 or Z>2.5),P(-2.08<Z<2.08) and P(0<Z<1.73)2.The masses of packages from a particular machine are normally
    1. 3 answers
    2. asked by Raj
    3. 578 views
12. Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of
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    2. asked by Brad
    3. 694 views
13. Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights
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    2. asked by Aryaa
    3. 1,854 views
14. Which of the following can be reasonably modeled by a normal distribution?The favorite colors of students in a kindergarten
    1. 10 answers
    2. asked by Anonymous
    3. 30,765 views
15. The top-selling Red and Voss tire is rated 70000 miles, which means nothing. In fact, the distance the tires can run until
    1. 3 answers
    2. asked by Zoe
    3. 831 views
16. Let X and Y be two normal random variables, with means 0 and 3 , respectively, and variances 1 and 16 , respectively. Find the
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    2. asked by Adam
    3. 4,763 views
17. Suppose the number of hours a type of light bulb will burn is normally distributed with a mean 84 with a standard deviation of 9
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    2. asked by Jess
    3. 650 views
18. Random samples of size n = 80 were selected from a binomial population with p = 0.6. Use the normal distribution to approximate
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    2. asked by tea
    3. 876 views
19. 1. When designing motorcycle helmets, the breadth of a person's head must be considered. Men have head breadths that are
    1. 2 answers
    2. asked by maczindahouse
    3. 5,343 views
20. If D ~ N(250,400) find(a) P(D>265 ∩ D<280) (b) P(D>265 | D<280) (c) P(D<242 ∪ D>256) I calculated (a) to be 0.0149 and (c)
    1. 1 answer
    2. asked by Ramesh
    3. 729 views
21. A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the
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    2. asked by carissa
    3. 1,673 views
22. The amount of time the university professors devote to their jobs per week is normally dis- tributed with a mean of 52 hours and
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    2. asked by Melvin
    3. 2,702 views
23. The heights of women in a certain population have a Normal distribution with mean 64 inches and standard deviation 3.5 inches.
    1. 1 answer
    2. asked by Sarah
    3. 1,546 views
24. Please help, I do not understand how to do this:Let x be a random variable that represents white blood cell count per cubic
    1. 3 answers
    2. asked by Amy
    3. 2,715 views
25. Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches and standard deviation 4
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    2. asked by Amy
    3. 1,334 views
26. The weekly study times for all students in a school are normally distributed with μ = 18 hours and σ = 6 hours. If 36 students
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    2. asked by Judy
    3. 661 views
27. In a school, the IQ scores of the students have a normal distribution with a mean value of 100, and a standard deviation of 10.
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    2. asked by ABDULA YUSUF
    3. 687 views
28. Suppose the temperature of a cup of coffee is normally distributed with a mean of 142 degress F. If a cup of coffee has a z
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    2. asked by PLZ HELP
    3. 894 views
29. A sign is posted in an elevator stating that the maximum number of people allowed is 25, and that the maximum weight capacity is
    1. 1 answer
    2. asked by Kara
    3. 752 views
30. Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard
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    2. asked by Obi
    3. 1,072 views
31. Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
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    2. asked by qwerty
    3. 1,143 views
32. A brewery's filling machine is adjusted to fill bottles with a mean of 31.9 oz. of ale and a variance of 0.004. Periodically, a
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    2. asked by Anonymous
    3. 662 views
33. Assume that women’s heights are normally distributed with a mean given by μ = 63.4 in, and a standard deviation given by σ =
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    2. asked by slomomo
    3. 2,883 views
34. Assume that the thermometer readings are normally distributed with a mean of 0 degrees C and a standard deviation of 1.00
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    2. asked by Jenn
    3. 978 views
35. Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a
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    2. asked by Eddie
    3. 960 views
36. B} The average number of mosquitoes in a stagnant pond is 70 per square meter with a standard deviation of 8. If 36 square
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    2. asked by Loren
    3. 985 views
37. Assume that X, the starting salary offer to psychology majors is normally distributed with a mean of $47,507 and a SD of $5000.1
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    2. asked by Jolie
    3. 5,939 views
38. Suppose that you are designing an instrument panel for a large industrial machine. The machine requires the person using it to
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    2. asked by Lamont Sanford
    3. 3,580 views
39. The average age of doctors in a certain hospital is 50.0 years old. Suppose the distribution of ages is normal and has a
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    2. asked by giovanny
    3. 3,664 views
40. For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20,
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    2. asked by Mia
    3. 608 views
41. For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20,
    1. 0 answers
    2. asked by Mia
    3. 789 views
42. Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
    1. 5 answers
    2. asked by A
    3. 2,268 views
43. Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the
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    2. asked by qwerty
    3. 797 views
44. Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the
    1. 4 answers
    2. asked by abc
    3. 2,161 views
45. (4 pts) The score on an exam from a certain MAT 112 class, X, is normally distributed with \mu = 77.6 and \sigma = 10.9.NOTE:
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    2. asked by Violet
    3. 2,333 views
46. 7. The random variable X is distributed normally with a mean of 12.46 and variance of 13.11. You collect a random sample of size
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    2. asked by John
    3. 641 views
47. Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard
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    2. asked by Anonymous
    3. 2,058 views
48. Consider the following. (Give your answers correct to four decimal places.)(a) Find P(0.00 < z < 2.13). =.4834 (b) Find P(-1.81
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    2. asked by Sue 6C
    3. 566 views
49. A brewery's filling machine is adjusted to fill bottles with a mean of 31.5 oz. of ale and a variance of 0.003. Periodically, a
    1. 2 answers
    2. asked by Tom614
    3. 747 views
50. Based on data from the National Center for Health Statistics, N. Wetzel used the normal distribution to model the length of
    1. 3 answers
    2. asked by lindsey
    3. 834 views
51. Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12-ounce can.
    1. 4 answers
    2. asked by Steven
    3. 2,803 views
52. Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12-ounce can.
    1. 1 answer
    2. asked by Steven
    3. 776 views
53. If X is a normal random variable with mean 11, and if the probability that X is less than 12.10 is .72 , then what is the
    1. 2 answers
    2. asked by Alia
    3. 631 views
54. Bottles of a popular cola contain a mean amount of 300 mL of cola. There is some variation from bottle to bottle because the
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    2. asked by Anonymous
    3. 664 views
55. Based on data from the National Health and Nutrition Examination Survey assume that the weights of men are normally distributed
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    2. asked by Anonymous
    3. 798 views
56. For a normal population with µ = 100 and σ = 20:1. What is the probability of a particular score being greater than 110? 2.
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    2. asked by Komal
    3. 1,270 views
57. Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following
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    2. asked by Anonymous
    3. 779 views
58. 1)Let X have a normal distribution with mean 6 and standard deviation 3. a) What is the probability that X > 8.72)What is the
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    2. asked by rachel
    3. 622 views
59. 3. Suppose you work for the Ford Motor Company and must establish regulations concerning the maximum number of people who can
    1. 1 answer
    2. asked by AMbe
    3. 569 views
60. Suppose that the weights of airline passenger bags are normally distributed with a mean of 48.08 pounds and a standard deviation
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    2. asked by Joe
    3. 1,552 views
61. Daily output of Marathon’s Garyville, Lousiana, refinery is normally distributed with a mean of232,000 barrels of crude oil
    1. 2 answers
    2. asked by Mary Ann
    3. 1,055 views
62. Assume that the population of heights of female college students is approximately normally distributed with mean m of 67.26
    1. 1 answer
    2. asked by tina
    3. 613 views
63. A set of data is normally distributed with a mean of 98 and a standard deviation of 15. What is the probability that the value
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    2. asked by Anonymous
    3. 1,014 views
64. Random variable X is normally distributed with mean 10 and standard deviation 2.Compute the following probabilities. a. Pr(X<10)
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    2. asked by Sally
    3. 991 views
65. Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution
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    2. asked by Denise
    3. 615 views
66. The time required to finish a test in normally distributed with a mean of 80 minutes and a standarddeviation of 15 minutes. What
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    2. asked by chelsa
    3. 832 views
67. on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is
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    2. asked by Michelle
    3. 1,534 views
68. After years of data collection by college students, it has been determined that the distribution of course grades in Ms.
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    2. asked by Karen
    3. 752 views
69. A consumer buys n light bulbs, each of which has a lifetime that has a meanof 800 hours, a standard deviation of 100 hours, and
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    2. asked by Alex
    3. 879 views
70. 1. The time it takes a student to cycle to school is normally distributed with a mean of 15 minutes and a variance of 2. The
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    2. asked by tan
    3. 769 views
71. The weights of individual nails produced by the 'Hammer 'n Nail' hardware company follow a normal distribution with the average
    1. 5 answers
    2. asked by GiNa
    3. 1,386 views
72. Fluctuation in the prices of precious metals such as gold have been empirically shown to be well approximated by a normal
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    2. asked by SEMALAW
    3. 609 views
73. The weights of pineapples grown are approximately normally distributed with a standard deviation of 2.5 and mean of 31 ounces.
    1. 1 answer
    2. asked by James
    3. 1,507 views
74. A normal distribution has a mean of 20 and a standard deviation of 3.What is the probability that a randomly selected x-value
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    2. asked by Sam
    3. 603 views
75. If X is a normal random variable with mean 60, and a standard deviation of 2, find:A: P (X<58) B: P(X>63) C: P(57<X<64)
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    2. asked by April
    3. 716 views
76. The diameter of a pipe is normally distributed with a mean of 0.4 inches and a variance of 0.0004. What is the probability that
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    2. asked by missy
    3. 1,038 views
77. You are the owner of an auto repair service. History tells you it takes on average 45 minutes to complete a repair job. You have
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    2. asked by John
    3. 635 views
78. Please help, need advise. ThanksA The amount of pyridoxine (in grams) in a multiple vitamin is normally distributed with = 110
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    2. asked by Fiza
    3. 1,821 views
79. A bottling company uses a filling machine to fill glass bottles with mango juice. The bottles are supposed to contain 300
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    2. asked by LINDA
    3. 1,063 views