Given that ZSTAT-+2.49, suppose you are testing the null hypothesis Ho: ?= 0.40

Question

Given that ZSTAT-+2.49, suppose you are testing the null hypothesis Ho: ?= 0.40 against the two-tail alternative hypothesis H1: ?#0.40 and you choose the level of significance 0.05. What is your statistical decision? ldentify the critical values The critical values are (Round to two decimal places as needed. Use a comma to separate answers as needed.) What is the appropriate conclusion? O A. Reject Ho. There is sufficient evidence that the proportion is different than 0.40. O B. Fail to reject Ho. There is sufficient evidence that the proportion is different than 0.40. ° C. Reject Ho. There is insufficient evidence that the proportion is different than 0.40 D. Fail to reject Ho. There is insufficient evidence that the proportion is different than 0.40.

Explanation / Answer

The critical values are -1.96 , 1.96

Since Z.stat lies outside theinterval (-1.96 , 1.96 ), the correct answer is

(A) Reject H0. There is sufficient evidence that the proportion is different from 0.40

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