MULTIPLE CHOICE. Choose the one alternative that best completes the statement or

Question

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question Vrite the null and alternative hypotheses you would use to test the following situation. 1) A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping that it will keep the disapproval rate below 13%. They will use a follow-up poll to assess the ad's effectiveness. A) H0: p-0.13 HA Ps0.13 ?) ??: ?-0.13 ??: p > 0.13 C) Ho: p> 0.13 HA:p 0.13 D) Ho: p> 0.13 HA Ps0.13 E) Ho: p 0.03 D) Ho: p> 0.03 HA: p-0.03 E) Ho: p

Explanation / Answer

Answer 1

It is clear from the question the political committee paid for a newspaper ad, to keep the disapproval rate below 13%, i.e. the alternate hypothesis will be p< 0.13 and null hypothesis is p = 0.13

Only option A has Alternate hypothesis which is matching p < 0.13 and null hypothesis p = 0.13

so, option A is correct

option B is incorrect because sign used for Ha is wrong

option C is incorrect because sign used for Ho is wrong

option D is incorrect because sign used for both Ho and Ha are wrong

option E is incorrect because sign used for both Ho and Ha are wrong

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