A samplemean, samplesize, and population standard deviation are provided below. Use theone-mean z-test to perform the required hypothesis test at the5%significance level.

x=24,n=16,=4,H0:=22,Ha:>22

The test statistic is

z=_____.

(Round to two decimal places asneeded.)

Identify the criticalvalue(s). Select the correct choice below and fill in the answer box within your choice.

(Round tothreedecimal places asneeded.)

A.The criticalvalueisz=_____

B.The criticalvaluesarez/2=_____

C.The criticalvalueisz=_____

(Reject/Do not reject)the null hypothesis. The data (provide/do not provide)sufficient evidence to conclude that the mean is (equal to 22/greater than 22/less than 22/not equal to 22).