H0:=218FH0:=218F H1:218FH1:218F Level of significance: =0.2=0.2 Sample size: n=12n=12 Test statistic: z=0.15z=0.15 Known population standard deviation Distribution of population data appears normal

Standard Normal Distribution Table

a. Determine the critical value(s) for the proposed hypothesis test.

• +

Round to two decimal places if necessary

b. Conclude whether to reject the null hypothesis or not based on the test statistic.

Reject

Fail to Reject

c. State the decision error type that is possible.

Type I Error

Type II Error