The Gallup Poll once asked a random sample of 1540 adults, “Do you happen to jog?” Suppose that the true proportion of all adults who jog is p = 0.15. a) What is the mean of the sampling distribution of ? b) Find the standard deviation of the sampling distribution of . Check that the 10% condition is met. c) Is the sampling distribution of approximately Normal? Justify your answer. d) Find the probability that between 13% and 17% of a random sample of 1540 adults are joggers.

The Gallup Poll once asked a random sample of 1540 adults, “Do you happen to jog?” Suppose that the true proportion of all adults who jog is p = 0.15. a) What is the mean of the sampling distribution of ? b) Find the standard deviation of the sampling distribution of . Check that the 10% condition is met. c) Is the sampling distribution of approximately Normal? Justify your answer. d) Find the probability that between 13% and 17% of a random sample of 1540 adults are joggers.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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