In March 2000, the New York Times conducted a poll of a random sample of 1003 ad

Question

In March 2000, the New York Times conducted a poll of a random sample of 1003 adults in all 50 states. One question asked was, "Do you think what is shown on television today is less moral than American society, more moral than American society, or accurately reflects morality in American society?" Of the answers, 46% said "Less, " 37% said "Accurate, " 9% said "More, " and the others had no opinion. We might use these data to answer the question, "Do more than half of all adults think TV is less moral than society?" To do this, our null hypothesis would be: a. p 0.5. d. p notequalto 0.5. The P-value for the test in the previous question is about 0.99. This means that a. the poll gives very strong evidence that more than half of adults feel TV is less moral than society. b. the poll gives weak evidence that more than half of adults feel TV is less moral than society. c. the poll sheds no light on whether more than half of adults feel TV is less moral than society. d. the poll gives no evidence that more than half of adults feel TV is less moral than society. The population for the poll is a. the 1,003 people interviewed. b. a simple random sample. c. the 46% who think TV is less moral than society. d. all adults living in the United States.

Explanation / Answer

27.Null hypothesis. The null hypothesis, denoted by H0, is usually the hypothesis that sample observations result purely from chance.

So, option C is the answer as we are trying to test the claim.

28. We reject the null hypothesis when the P-value is less than the significance level. If we take a significance level of 5% or 0.05, P-value here is 0.99 which is more than significance level, we will accept the null hypothesis.

That is option A

29. In statistics, survey sampling describes the process of selecting a sample of elements from a target population to conduct a survey. The term "survey" may refer to many different types or techniques of observation. So, option D is the answer. 1003 adults is the sample taken out of the whole adult population of the US.

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