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The Dean of a college wants to use the proportion of a population to determine the sample size needed to interview regarding their thoughts about the new school structure. She wants to be able to assert with a probability 0.95 that her error will be at most 0.05. Similar polls in the past showed that 65% approved the new structure. How large a sample does the Dean need? Solution: (a) Known Information: - za/2 = E =

The Dean of a college wants to use the proportion of a population to determine the sample size needed to interview regarding their thoughts about the new school structure. She wants to be able to assert with a probability 0.95 that her error will be at most 0.05. Similar polls in the past showed that 65% approved the new structure. How large a sample does the Dean need? Solution: (a) Known Information: - za/2 = E =

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Exercise 5. New School Structure The Dean of a college wants to use the proportion of a population to determine the sample size needed to interview regarding their thoughts about the new school structure. She wants to be able to assert with a probability 0.95 that her error will be at most 0.05. Similar polls in the past showed that 65% approved the new structure. How large a sample does the Dean need? Solution: (a) Known Information: Za/2 –E =,
Transcribed Image Text:Exercise 5. New School Structure The Dean of a college wants to use the proportion of a population to determine the sample size needed to interview regarding their thoughts about the new school structure. She wants to be able to assert with a probability 0.95 that her error will be at most 0.05. Similar polls in the past showed that 65% approved the new structure. How large a sample does the Dean need? Solution: (a) Known Information: Za/2 –E =,
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