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A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) (77.68, 78.31) 4 is not larger than 40 so we cannot compute a confidence interval.

A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) (77.68, 78.31) 4 is not larger than 40 so we cannot compute a confidence interval.

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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A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) O (77.68, 78.31) 4 is not larger than 40 so we cannot compute a confidence interval.
Transcribed Image Text:A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) O (77.68, 78.31) 4 is not larger than 40 so we cannot compute a confidence interval.
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