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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.

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.

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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C Take Quiz Question 3 1 pts 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) (77.69, 78. 30) O (77.68, 78.31) O4 is not larger than 40 so we cannot compute a confidence interval. 1 pts Question 4
Transcribed Image Text:C Take Quiz Question 3 1 pts 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) (77.69, 78. 30) O (77.68, 78.31) O4 is not larger than 40 so we cannot compute a confidence interval. 1 pts Question 4
Question 4 1 pts In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) O (68.61, 71.39) O (68.61, 71.38) (68.60, 71.39) (69.96, 70.04) 5 is not larger than 40 so we cannot compute a confidence interval, pts
Transcribed Image Text:Question 4 1 pts In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) O (68.61, 71.39) O (68.61, 71.38) (68.60, 71.39) (69.96, 70.04) 5 is not larger than 40 so we cannot compute a confidence interval, pts
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