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1. If random samples (of size n) of students are taken from a specific school district in Michigan and asked about their school involvement, what
1. If random samples (of size n) of students are taken from a specific school district in Michigan and asked about their school involvement, what conclusions can we expect to draw from those samples? A. We can use the sampling distribution to infer about the behavior of all students in the U.S. B. We can use the sampling distribution to infer about the behavior of all students in the Michigan. C. We can use the sampling distribution to infer about the behavior of all students in the specific district. D.We can use the sampling distribution to infer about the behavior of all students in the neighboring school district. I believe the answer is C but I need a second opinion. 2. Solve the problem. Assume that women's heights are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 90 women are randomly selected, find the probability that they have a mean height between 62.9 inches and 64.0 inches. A. 0.9318 B.0.0424 C.0.1739 D.0.7248 I believe the answer is B but I need a second opinion. 3.In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a standard deviation of 5.2 minutes. If 14 days are randomly selected, find the probability that the mean wait time is between 10 and 20 minutes. A.0.9693 B.0.6713 C. 0 9470 D.0.0471 I believe the answer is B but I need a second opinion. 4. Solve the problem. Weights were recorded for all nurses at a particular hospital, the mean weight for an individual nurse was 135 lbs. with a standard deviation of 15. If 19 nurses are selected at random, find the probability that the mean weight is between 125 and 130 Ibs. A.0.1144 B. 0.2008 C. 0.5591 D.0.0713 I believe the answer is B but I need a second opinion. 5. Solve the problem. Human body temperatures are normally distributed with a mean of 98.20F and a standard deviation of 0.62F. If 19 people are randomly selected, find the probability that their mean body temperature will be less than 98.50F. A.0.3343 B.0.9826 C. 0.4826 D.0.0833 I believe the answer is a but I need a second opinion. 6. Solve the problem. The weights of the fish in a certain lake are normally distributed with a mean of 19 lb and a standard deviation of 6. If 4 fish are randomly selected, what is the probability that the mean weight will be between 16.6 and 22.6 1b? A.0.6730 B. 0.0968 C.03270 D. 0.4032 I believe the answers D but I need a second opinion
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