Suppose we want a 90% confidence interval for the average amount spent on books by freshmen in their first year at a major university. The interval is to have a margin of error of no more than $2, and the amount spent has an approximately Normal distribution with a standard deviation o = $30. The number of observations required is closest to O a 391 O b 257 609 O d 568
Suppose we want a 90% confidence interval for the average amount spent on books by freshmen in their first year at a major university. The interval is to have a margin of error of no more than $2, and the amount spent has an approximately Normal distribution with a standard deviation o = $30. The number of observations required is closest to O a 391 O b 257 609 O d 568
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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