Suppose that we will randomly select a sample of 64 measurements from a population having a mean
Question:
Suppose that we will randomly select a sample of 64 measurements from a population having a mean equal to 20 and a standard deviation equal to 4.
a. Describe the shape of the sampling distribution of the sample mean. Do we need to make any assumptions about the shape of the population? Why or why not?
b. Find the mean and the standard deviation of the sampling distribution of the sample mean .
c. Calculate the probability that we will obtain a sample mean greater than 21µxandσx that is, calculate P=(>21).
d. Calculate the probability that we will obtain a sample mean less than 19.385; that is, calculate P=(>19.385).
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a The sampling distribution of x is approximately ...View the full answer
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Related Book For 
Essentials Of Business Statistics
ISBN: 9780078020537
5th Edition
Authors: Bruce Bowerman, Richard Connell, Emily Murphree, Burdeane Or
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