) The sample mean and standard deviation from a random sample of 10 observations from a normal population were computed as equals 23 and equals 9. Perform the test required to determine whether there is enough evidence to infer at the 5% significance level that the population mean is greater than 20. b) Repeat part a) when n=30 c) Repeat part a) when n=50 d) Describe the effect on the test statistic of increasing the sample size.
) The sample mean and standard deviation from a random sample of 10 observations from a normal population were computed as equals 23 and equals 9. Perform the test required to determine whether there is enough evidence to infer at the 5% significance level that the population mean is greater than 20. b) Repeat part a) when n=30 c) Repeat part a) when n=50 d) Describe the effect on the test statistic of increasing the sample size.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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a) The sample mean and standard deviation from a random sample of 10 observations from a normal population were computed as equals 23 and equals 9. Perform the test required to determine whether there is enough evidence to infer at the 5% significance level that the population mean is greater than 20.
b) Repeat part a) when n=30
c) Repeat part a) when n=50
d) Describe the effect on the test statistic of increasing the sample size .
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