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Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 381 with 40.9% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places.

Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 381 with 40.9% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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ty very much.

Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 381 with 40.9% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places. <p < Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
Transcribed Image Text:Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 381 with 40.9% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places. <p < Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
You measure 48 backpacks' weights, and find they have a mean weight of 72 ounces. Assume the population standard deviation is 4.8 ounces. Based on this, construct a 90% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ounces
Transcribed Image Text:You measure 48 backpacks' weights, and find they have a mean weight of 72 ounces. Assume the population standard deviation is 4.8 ounces. Based on this, construct a 90% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ounces
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