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* In a Gallup poll of 617 randomly selected adults, 334 said that they were under paid. a) identify the best point estimate of the

* In a Gallup poll of 617 randomly selected adults, 334 said that they were under paid.

a) identify the best point estimate of the percentage of all adults who say that they are underpaid.

b) construct a 90% confidence interval estimate of the percentage of all adults who say that they are underpaid.

c) Find the sample size required to estimate the mean IA of students currently taking a statistics course. Assume that we want 95% confidence that the mean from the sample is within three IQ points of the true population mean. Also assume that =12

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