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A college is going to administer an assessment test to incoming freshman. Co be administered over the course of a month with 200 hundred student the first weekend. The college computes the average score of the first 20 students to be 85% with a standard deviation of 10%. Calculate a 95% co for the average score of all incoming freshman. (83.61, 86.38)

A college is going to administer an assessment test to incoming freshman. Co be administered over the course of a month with 200 hundred student the first weekend. The college computes the average score of the first 20 students to be 85% with a standard deviation of 10%. Calculate a 95% co for the average score of all incoming freshman. (83.61, 86.38)

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A college is going to administer an assessment test to incoming freshman. The test is going to be administered over the course of a month with 200 hundred students taking the exam the first weekend. The college computes the average score of the first 200 hundred students to be 85% with a standard deviation of 10%. Calculate a 95% confidence interval for the average score of all incoming freshman. O (83.61, 86.38) O (83.61, 86.39) O (84.96, 85.04) O (83.61, 86.30)
Transcribed Image Text:A college is going to administer an assessment test to incoming freshman. The test is going to be administered over the course of a month with 200 hundred students taking the exam the first weekend. The college computes the average score of the first 200 hundred students to be 85% with a standard deviation of 10%. Calculate a 95% confidence interval for the average score of all incoming freshman. O (83.61, 86.38) O (83.61, 86.39) O (84.96, 85.04) O (83.61, 86.30)
1 pts Question 7 If a sample of 35 employees had been selected, could we find a 95% confidence interval for the average salary of the entire company? Yes because when I plug 35 into the calculator with the previous average of $55,000 and standard deviation of $5,000 I get a confidence interval of ($53,343.53, $56,656.47) O No since 35 is less than 40.
Transcribed Image Text:1 pts Question 7 If a sample of 35 employees had been selected, could we find a 95% confidence interval for the average salary of the entire company? Yes because when I plug 35 into the calculator with the previous average of $55,000 and standard deviation of $5,000 I get a confidence interval of ($53,343.53, $56,656.47) O No since 35 is less than 40.
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