a. What is the probability that between 65% and 80% of the sampled students support the university plan. b. What is the probability that less than 50% of the sampled students support the university plan.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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As part of a course project, a student gathers data on a university campus. The data are related to
student opinion on the university plan to extend semester lengths from 12 weeks to 13 weeks.
Suppose the true proportion of students supporting the plan is 0.61. Consider a random sample of 120
students.
a. What is the probability that between 65% and 80% of the sampled students support the university
plan.
b. What is the probability that less than 50% of the sampled students support the university plan.
Transcribed Image Text:As part of a course project, a student gathers data on a university campus. The data are related to student opinion on the university plan to extend semester lengths from 12 weeks to 13 weeks. Suppose the true proportion of students supporting the plan is 0.61. Consider a random sample of 120 students. a. What is the probability that between 65% and 80% of the sampled students support the university plan. b. What is the probability that less than 50% of the sampled students support the university plan.
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