According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 191 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 12%? (Enter your answer as a number accurate to 4 decimal places.) In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Suppose your sample size is 242. What is the probability that the sample proportion will be at most 5 percent more than the population proportion? (Enter your answer as a number accurate to 4 decimal places.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the grocery
store. Assume this is the true proportion and you plan to randomly survey 191 grocery shoppers to
investigate their behavior. What is the probability that the sample proportion does not exceed 12%?
(Enter your answer as a number accurate to 4 decimal places.)
In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been hired
by the Bureau to investigate complaints this year involving computer stores. You plan to select a random
sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Suppose your
sample size is 242. What is the probability that the sample proportion will be at most 5 percent more than
the population proportion?
(Enter your answer as a number accurate to 4 decimal places.)
Transcribed Image Text:According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 191 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 12%? (Enter your answer as a number accurate to 4 decimal places.) In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Suppose your sample size is 242. What is the probability that the sample proportion will be at most 5 percent more than the population proportion? (Enter your answer as a number accurate to 4 decimal places.)
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