a) Determine then compare critical values z*, t (for n=20), and t* (for n=36) for a 92% confidence level Explain why they are ordered as they are (least to greatest)? b) Determine a 90% confidence interval estimate using a t-distribution for μ = the mean gas mileage of 2010 Sport Utility Vehicles (SUV's) based on a SRS of 36 2010 SUV's with mean x = 12.40 mpg and (sample) standard deviation s = 1.96 mpg.
a) Determine then compare critical values z*, t (for n=20), and t* (for n=36) for a 92% confidence level Explain why they are ordered as they are (least to greatest)? b) Determine a 90% confidence interval estimate using a t-distribution for μ = the mean gas mileage of 2010 Sport Utility Vehicles (SUV's) based on a SRS of 36 2010 SUV's with mean x = 12.40 mpg and (sample) standard deviation s = 1.96 mpg.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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