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a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) <μ< $ με b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease?

a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) <μ< $ με b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease?

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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h 2 iza apt Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $6.00 $6.00 $4.00 $13.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*roundſto the nearest cent*) $ u<$ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Increase Decrease
Transcribed Image Text:h 2 iza apt Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $6.00 $6.00 $4.00 $13.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*roundſto the nearest cent*) $ u<$ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Increase Decrease
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