You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 64%. You would like to be 98% confident that your estimate is within 4% of the true population proportion. How large of a sample size is required? n =

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Question 3
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the
population proportion is approximately 64%. You would like to be 98% confident that your estimate is within 4%
of the true population proportion. How large of a sample size is required?
n =
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3D
Transcribed Image Text:Question 3 You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 64%. You would like to be 98% confident that your estimate is within 4% of the true population proportion. How large of a sample size is required? n = Question Help: D Post to forum Submit Question DEC 3D
Question 1
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Based on historical data, your manager believes that 37% of the company's orders come from first-time
customers. A random sample of 199 orders will be used to estimate the proportion of first-time-customers.
What is the probability that the sample proportion is between 0.31 and 0.45?
Answer
(Enter your answer as a number accurate to 4 decimal places.)
%3D
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w』の
DÉC
W.
3D
Transcribed Image Text:Question 1 <> Based on historical data, your manager believes that 37% of the company's orders come from first-time customers. A random sample of 199 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.31 and 0.45? Answer (Enter your answer as a number accurate to 4 decimal places.) %3D Question Help: D Post to forum Submit Question w』の DÉC W. 3D
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Note: Hello! As you have posted 2 different questions, we are answering the first question (3). In case you require the unanswered question also, kindly re-post them as separate question.

3.

From the given information, confidence level is 0.98, p=0.64 and E=0.04.

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