According to a survey, about 24% of adults in a certain country are pessimistic about the future of marriage and the family. This is based on a sample, but assume that this percentage is correct for all adults in the country. Complete parts a through e below. a) Using a Binomial model, what is the probability that, in a sample of 40 adults, 20% or fewer of the people in the sample are pessimistic about the future of marriage and family? ORound to three decimal places as needed.) b) Now use a Normal model to compute that probability. How does this compare to the answer from part a? Using the Normal model, the probability is (Round to three decimal places as needed.) The difference between the two probabilities is (Round to three decimal places as needed.) c) Using a Binomial model, what is the probability that, in a sample of 900 adults, 20% or fewer of the people in the sample are pessimistic about the future of marriage and family? O(Round to three decimal places as needed.) d) Now use a Normal model to compute that probability How does this ar from part c?

According to a survey, about 24% of adults in a certain country are pessimistic about the future of marriage and the family. This is based on a sample, but assume that this percentage is correct for all adults in the country. Complete parts a through e below. a) Using a Binomial model, what is the probability that, in a sample of 40 adults, 20% or fewer of the people in the sample are pessimistic about the future of marriage and family? ORound to three decimal places as needed.) b) Now use a Normal model to compute that probability. How does this compare to the answer from part a? Using the Normal model, the probability is (Round to three decimal places as needed.) The difference between the two probabilities is (Round to three decimal places as needed.) c) Using a Binomial model, what is the probability that, in a sample of 900 adults, 20% or fewer of the people in the sample are pessimistic about the future of marriage and family? O(Round to three decimal places as needed.) d) Now use a Normal model to compute that probability How does this ar from part c?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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