## Answers

Ans : FALSE

Population proportion = Po = 0.2 Sample size=n= 1000 Sample number of events = x = 221 Sample proportion= p== 0.221 Level of significance = a= 0.05 Null Hypothesis Ho:p = 0.2 Alternate Hypothesis H :p # 0.2 Significance Level = Q = 0.05 Using Excel, Critical value=z*= ABS(NORM.S.INV(0.05/2)) = 1.96 Thus the critical values for two tailed test are-1.96 and 1.96. Decision Region : "Reject H, if z<-1.96 or z> 1.96."

The test statistic is, P-PO Z =- = 1.66 P. (1-P) Conclusion: By Decision region, we fail to reject HO.

.
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