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nini

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A manufacturer claims that their battery for a particular cell phone model ​lasts 10 hours. ​ ​However, consumers complained that the batteries lasted ​less than 10 hours. ​ ​The manufacturer randomly sampled 24 batterie...
1 answer
Ms. Miller, the manager of a store, wants to find out what percent of all ​customers spend more than $ 50 $50 on a single visit. ​ ​She randomly collects 35 35 ​receipts from last year. ​The rounded amounts, in dollars,...
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A manufacturer claims that their battery for a particular cell phone model ​lasts10 hours. ​ ​However, consumers complained that the batteries lasted ​less than 10 hours. ​ ​The manufacturer randomly sampled 24 batteries...
1 answer
A dish contains hard candies of various flavors and various colors. ​ ​Of the ​candies in the dish, 30 % 30% are mint and 20 % 20% are green. ​ ​A piece of candy is to ​be selected at random from the dish. ​ ​The probabi...
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A wheel at a carnival game has 30 sectors of equal size, with 15 red sectors ​and 15 black sectors. ​ ​At the end of a spin of the wheel, the pointer is equally ​likely to land on a red sector or a black sector. ​ ​A boy...
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(a) A citrus farmer who grows mandarin oranges finds that the diameters of mandarin oranges harvested on his farm follow a normal distribution with a mean diameter of 5.85 cm and a standard deviation of 0.24 cm. Part A A...
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The time that it took students to complete an obstacle course in Gym class follows a normal distribution. The mean time is 21 minutes with a standard deviation of 4 minutes. Emilio took 27 minutes to complete the course....
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he number of years before a Sunshine CD player breaks down is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. Part A Which of the graphs below represents the situation? A B C D
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In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probability that a student plays a sport given that they play an instrument? Plays an instrument Do...
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In a class of students, the following data table summarizes how many students have a brother or a sister. What is the probability that a student has a sister given that they have a brother? Has a brother Does not have a...
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In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probability that a student who plays a sport also plays an instrument? Plays an instrument Does not...
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In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probability that a student does not play an instrument given that they play a sport? Plays an instr...
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