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a. Determine the mean of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 15.65 and standard deviation to be 5.35. Which semester had more variation in the students' marks?

a. Determine the mean of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 15.65 and standard deviation to be 5.35. Which semester had more variation in the students' marks?

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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Here are the midterm marks of 8 students from STA201 in the Summer 2020 Semester. 21 17 28 15 12 21 29 23 a. Determine the mean of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 15.65 and standard deviation to be 5.35. Which semester had more variation in the students' marks? Summer2020 OSpring2020 Equal variation Can not be calculated
Transcribed Image Text:Here are the midterm marks of 8 students from STA201 in the Summer 2020 Semester. 21 17 28 15 12 21 29 23 a. Determine the mean of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the students' marks. Answer in exact fraction, or rounded to at least 4 decimal places c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 15.65 and standard deviation to be 5.35. Which semester had more variation in the students' marks? Summer2020 OSpring2020 Equal variation Can not be calculated
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