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Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55

Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 39E: Assume that the probability that an airplane engine will fail during a torture test is 12and that...
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Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87)? %3D Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Choose the correct description of the shape of the sampling distribution of x. O A. The distribution is skewed right. OB. The distribution is uniform. C. The distribution is skewed left. O D. The distribution is approximately normal. E. The shape of the distribution is unknown. Click to select your answer(s). Type here to search
Transcribed Image Text:Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87)? %3D Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Choose the correct description of the shape of the sampling distribution of x. O A. The distribution is skewed right. OB. The distribution is uniform. C. The distribution is skewed left. O D. The distribution is approximately normal. E. The shape of the distribution is unknown. Click to select your answer(s). Type here to search
II Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87) ? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Find the mean and standard deviation of the sampling distribution of x. Hx %3D (b) P (x>86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55<x<87) =(Round to four decimal places as needed.) Click to select your answer(s). Type here to search ASU
Transcribed Image Text:II Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87) ? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Find the mean and standard deviation of the sampling distribution of x. Hx %3D (b) P (x>86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55<x<87) =(Round to four decimal places as needed.) Click to select your answer(s). Type here to search ASU
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