What is the standard error of the sample proportion who areconcerned? b. What is the probability that the sample proportion is less than 0.50? c. What is the upper limit of the sample proportion such that only 5% of the time the sample proportion would exceed thisvalue?

What is the standard error of the sample proportion who areconcerned? b. What is the probability that the sample proportion is less than 0.50? c. What is the upper limit of the sample proportion such that only 5% of the time the sample proportion would exceed thisvalue?

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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Question

An employee survey conducted by a company two years ago found that 53% of its employees were concerned about future health care benefits. A random sample of 90 of these employees were asked if they were now concerned about future health care benefits. Answer the following, assuming that there has been no change in the level of concern about health care benefits compared to the survey two years ago.

a. What is the standard error of the sample proportion who areconcerned?

b. What is the probability that the sample proportion is less than 0.50?

c. What is the upper limit of the sample proportion such that only 5% of the time the sample proportion would exceed thisvalue?

(Round to five decimal places as needed.)

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