In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) 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. Assume the population proportion of complaints settled for the computer stores is the 0.75, as mentioned above. Suppose your sample size is 72. What is the probability that the sample proportion will be 3 or more percent below the population proportion? Answer (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. (Source: USA Today, March 2, 2009) 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. Assume the population proportion of complaints settled for the computer stores is the 0.75, as mentioned above. Suppose your sample size is 72. What is the probability that the sample proportion will be 3 or more percent below the population proportion? Answer (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

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today,
March 2, 2009) 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. Assume the population proportion of complaints settled for the computer stores is
the 0.75, as mentioned above. Suppose your sample size is 72.
What is the probability that the sample proportion will be 3 or more percent below the population
proportion?
Answer
(Enter your answer as a number accurate to 4 decimal places.)

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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 299. What is the probability that the sample proportion will be at least 5 percent more than the population proportion?