The mean of a population is assumed to be 75. However data suggests the mean can be less than 75. A sample of size 100 from the population is considered. Assume a calculated sample mean of 60 and a standard deviation of 10. At the 1% significance level we will determine if the null hypothesis should be rejected. Give the null and alternative hypothesis.

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Question 7: give the rejection region.
Give the rejection region.
O z less than -2.33
O z less than 2.33
O z less than -1.64
O z less than 1.64
Transcribed Image Text:Give the rejection region. O z less than -2.33 O z less than 2.33 O z less than -1.64 O z less than 1.64
The mean of a population is assumed to be 75. However data
suggests the mean can be less than 75. A sample of size
100 from the population is considered. Assume a calculated
sample mean of 60 and a standard deviation of 10. At the 1%
significance level we will determine if the null hypothesis
should be rejected. Give the null and alternative hypothesis.
Transcribed Image Text:The mean of a population is assumed to be 75. However data suggests the mean can be less than 75. A sample of size 100 from the population is considered. Assume a calculated sample mean of 60 and a standard deviation of 10. At the 1% significance level we will determine if the null hypothesis should be rejected. Give the null and alternative hypothesis.
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