4. According to the school board, 48% of all the voters in the district support the referendum. Suppose a principal is interested in the proportions who support the referendum in a group of 38 parents. (a) What are the values of n and p? (b) What is the probability that the proportion of the group who support the referendum is at least two thirds? (c) What is the probability that the proportion of the group who support the referendum is no more than 20%?

4. According to the school board, 48% of all the voters in the district support the referendum. Suppose a principal is interested in the proportions who support the referendum in a group of 38 parents. (a) What are the values of n and p? (b) What is the probability that the proportion of the group who support the referendum is at least two thirds? (c) What is the probability that the proportion of the group who support the referendum is no more than 20%?

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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4. According to the school board, 48% of all the voters in the district support the referendum.
Suppose a principal is interested in the proportions who support the referendum in a group of 38
parents.
(a) What are the values of n and p?
(b) What is the probability that the proportion of the group who support the referendum is at
least two thirds?
(c) What is the probability that the proportion of the group who support the referendum is no
more than 20%?
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