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 =
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 =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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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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Transcribed Image Text: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.)
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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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