Suppose that 21% of the subscribers of a cable television company watch the shopping channel at least once a month. The cable company is trying to decide whether to replace this channel with a new local station. A survey of 81 subscribers will be undertaken. The cable company has decided to drop the shopping channel if the sample proportion is less than 0.19. A) What is the probability that the cable company will drop the shopping channel, even though the true proportion of all subscribers who watch it is 0.21? (express in decimal form and round final answer to 3 decimal places) B)What was the Z-score you used to get the answer above? (round final answer to 2 decimal places)

Suppose that 21% of the subscribers of a cable television company watch the shopping channel at least once a month. The cable company is trying to decide whether to replace this channel with a new local station. A survey of 81 subscribers will be undertaken. The cable company has decided to drop the shopping channel if the sample proportion is less than 0.19. A) What is the probability that the cable company will drop the shopping channel, even though the true proportion of all subscribers who watch it is 0.21? (express in decimal form and round final answer to 3 decimal places) B)What was the Z-score you used to get the answer above? (round final answer to 2 decimal places)

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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