Explaining confidence. You ask another student to explain the confidence interva

Question

Explaining confidence. You ask another student to explain the confidence interval for mean ideal weight described in the previous exercise. The student answers, "We can he 95% confident that future samples of adult American women will say that their mean ideal weight is between 138.6 and 141.4 pounds." Is this explanation correct? Explain your answer. Explaining confidence. Here is an explanation from the Associated Press concerning one of its opinion polls. Explain briefly but clearly in what way this explanation is incorrect. For a poll of 1, 600 adults, the variation due to sampling error is no more than three percentage points either way. The error margin is said to be valid at the 95 percent confidence level. This means that, if the same questions were repeated in 20 polls, the results of at least 19 surveys would be within three percentage points of the results of this survey.

Explanation / Answer

14.23 This explanation is wrong. As confidence interval means a range of values so defined that there is a specified probability that the value of a parameter of population lies within it.

Here it mentions sample so wrong.

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