Consider the following hypothesis test:
H0: 50
Ha: > 50
A sample of 55 is used and the population standard deviation is 6. Use the critical value approach to state your conclusion for each of the following sample results. Use = .05.
a. With
= 52.5, what is the value of the test statistic (to 2 decimals)?
Can it be concluded that the population mean is greater than 50?
b. With
= 51, what is the value of the test statistic (to 2 decimals)?
Can it be concluded that the population mean is greater than 50?
c. With
= 51.8, what is the value of the test statistic (to 2 decimals)?
Can it be concluded that the population mean is greater than 50?