3. About 68% of the students at Fairview Community College favor a new policy regarding parking on campus. Suppose we are interested in the proportion of 65 students in a mathematics class who favor the policy. (a) Is the normal approximation to the proportion p^= r/n valid? Explain. (b) What is the probability that the proportion of the class who favor the policy is at least two fifths? (c) What is the probability that the proportion of the class who favor the policy is no more than 70%?

3. About 68% of the students at Fairview Community College favor a new policy regarding parking on campus. Suppose we are interested in the proportion of 65 students in a mathematics class who favor the policy. (a) Is the normal approximation to the proportion p^= r/n valid? Explain. (b) What is the probability that the proportion of the class who favor the policy is at least two fifths? (c) What is the probability that the proportion of the class who favor the policy is no more than 70%?

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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3. About 68% of the students at Fairview Community College favor a new policy regarding parking
on campus. Suppose we are interested in the proportion of 65 students in a mathematics class who
favor the polićy.
(a) Is the normal approximation to the proportion p^ = r/n valid? Explain.
(b) What is the probability that the proportion of the class who favor the policy is at least two
fifths?
(c) What is the probability that the proportion of the class who favor the policy is no more than
70%?
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
ASUS

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