Consider the following hypothesis test:
H 0:Â Â Â 50
H a:Â Â > 50
A sample of 60 is used and the population standard deviation is7. Use the critical value approach to state your conclusion foreach of the following sample results. Use  = .05.
a. With  = 52.5, what is the value of the teststatistic (to 2 decimals)?
 Â
Can it be concluded that the population mean is greater than50?
SelectYesNoItem 2
b. With  = 51, what is the value of the test statistic(to 2 decimals)?
 Â
Can it be concluded that the population mean is greater than50?
SelectYesNoItem 4
c. With  = 51.8, what is the value of the teststatistic (to 2 decimals)?
 Â
Can it be concluded that the population mean is greater than50?
SelectYesNoItem 6
