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5. Refer to question number 4. Suppose that you want a .90 probability that the sample proportion is within .02of the population proportion of the

5.Refer to question number 4. Suppose that you want a .90 probability that the sample

proportion is within .02of the population proportion of the adults who answered 'No' to

the question whether they believed that today's children would be better off than their parents.

(1) How large a sample size is needed to meet the required precision? Assume that is

obtained from a previous sample.A known sample proportion is the same value as in

question number 4.

(2) How large a sample size is needed to meet the required precision?

Assume that is not available

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