b. What is the probability that the sample proportion will be between 0.20 and 0.40 (to 4 decimals)? C. What is the probability that the sample proportion will be between 0.25 and 0.35 (to 4 decimals)?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The president of Doerman Distributors, Inc., believes that 30% of the firm's orders come from first-time customers. A simple random sample of
100 orders will be used to estimate the proportion of first-time customers. Use z-table.
a. Assume that the president is correct and p = 0.30. What is the sampling distribution of p for this study?
Select your answer
b. What is the probability that the sample proportion will be between 0.20 and 0.40 (to 4 decimals)?
C. What is the probability that the sample proportion will be between 0.25 and 0.35 (to 4 decimals)?
Transcribed Image Text:The president of Doerman Distributors, Inc., believes that 30% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate the proportion of first-time customers. Use z-table. a. Assume that the president is correct and p = 0.30. What is the sampling distribution of p for this study? Select your answer b. What is the probability that the sample proportion will be between 0.20 and 0.40 (to 4 decimals)? C. What is the probability that the sample proportion will be between 0.25 and 0.35 (to 4 decimals)?
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