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

Question 7: give the rejection region.


Extracted 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


Extracted 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.