Dr. Thomas Stanley of Georgia State University has surveyed millionaires since 1973. Among other information, Stanley obtains estimates for the mean age, µ, of all U.S. millionaires.Suppose that 36 randomly selected U.S. millionaires are the following ages, in years. Assume that the standard deviation of ages of all U.S. millionaires is 13.0 Years. The mean of the data is 58.53 years. 31 45 79 64 48 38 39 68 52 59 68 79 42 79 53 74 66 66 71 61 52 47 39 54 67 55 71 77 64 60 75 42 69 48 57 48 a) What is the population and variable in this study? b) Is it reasonable to apply the z-interval procedure to obtain a confidence interval? c) Use the z-interval procedure to determine a 95% confidence interval for the mean age of all U.S. millionaires
Dr. Thomas Stanley of Georgia State University has surveyed millionaires since 1973. Among other information, Stanley obtains estimates for the mean age, µ, of all U.S. millionaires.Suppose that 36 randomly selected U.S. millionaires are the following ages, in years. Assume that the standard deviation of ages of all U.S. millionaires is 13.0 Years. The mean of the data is 58.53 years. 31 45 79 64 48 38 39 68 52 59 68 79 42 79 53 74 66 66 71 61 52 47 39 54 67 55 71 77 64 60 75 42 69 48 57 48 a) What is the population and variable in this study? b) Is it reasonable to apply the z-interval procedure to obtain a confidence interval? c) Use the z-interval procedure to determine a 95% confidence interval for the mean age of all U.S. millionaires
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Dr. Thomas Stanley of Georgia State University has surveyed millionaires since 1973. Among other information, Stanley obtains estimates for the
31 | 45 | 79 | 64 | 48 | 38 | 39 | 68 | 52 |
59 | 68 | 79 | 42 | 79 | 53 | 74 | 66 | 66 |
71 | 61 | 52 | 47 | 39 | 54 | 67 | 55 | 71 |
77 | 64 | 60 | 75 | 42 | 69 | 48 | 57 | 48 |
a) What is the population and variable in this study?
b) Is it reasonable to apply the z-interval procedure to obtain a confidence interval?
c) Use the z-interval procedure to determine a 95% confidence interval for the mean age of all U.S. millionaires
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