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crackdown is the same as the national 67%, what is the probability that the proportion in an SRS of 100 students is as smali or smaller than the result of the administrations sample?

(c) A writer in the student paper says that support for a crackdown is

lower on your campus than nationally. Write a short letter to the editor explaining why the survey does not support this conclusion.

5.14 “How would you describe your own physical health at this time? Would you say your physical health is—excellent, good, only fair, or poor?” The Gallup Poll asked this ąuestion of 1005 randomly selected adults, of whom 29% said “excellent.”² Suppose that in fact the proportion of the adult population who say their health is excellent isp = 0.29.

(a)    What is the probability that the sample proportion p of an SRS of size n = 1000 who say their health is excellent lies between 26% and 32%? (That is, within ±3% of the truth about the population.)

(b)    Repeat the probability calculation of (a) for SRSs of sizes n = 250 and n = 4000. What generał conclusion can you draw from your calculations?

5.15 “How would you describe your own personal weight situation right now—very overweight, somewhat overweight, about right, somewhat underweight, or very underweight?” When the Gallup Poll asked an SRS of 1005 adults this ąuestion, 51% answered “about right.”³ Suppose that in fact 51% of the entire adult population think their weight is about _right._■■■    - ■ -_I_