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236. A sample of the number of study hours per week of college students is collected. Some of the sample results of this sur- vey are given in the following table. Study Hours z Score Percentile Rank 4 -2.5 10 -1.75 20 24 34 -0.5 36 0 1.25 1.5 10 25 35 40 By inspection of the table, determine: a) The mean study time for all the students. b) The median study time for all the students. c) The percent of college students who study between 20 and 36 hours per week. I d) The study time representing the 4th decile. e) The study time representing the 1st quartile. f) The study time representing the 3rd quartile. g) The interquartile range 50 42 2.25 75 95

236. A sample of the number of study hours per week of college students is collected. Some of the sample results of this sur- vey are given in the following table. Study Hours z Score Percentile Rank 4 -2.5 10 -1.75 20 24 34 -0.5 36 0 1.25 1.5 10 25 35 40 By inspection of the table, determine: a) The mean study time for all the students. b) The median study time for all the students. c) The percent of college students who study between 20 and 36 hours per week. I d) The study time representing the 4th decile. e) The study time representing the 1st quartile. f) The study time representing the 3rd quartile. g) The interquartile range 50 42 2.25 75 95

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
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esc tab . caps hift * ! @ 80 F3 Study Hours z Score Percentile Rank 888 F4 MacBook Air 4 -2.5 F6 10 -1.75 44 F7 DII FB DD F9 236. A sample of the number of study hours per week of college students is collected. Some of the sample results of this sur- vey are given in the following table. 20 24 34 -0.5 0 1.25 4 50 F11 10 25 35 40 By inspection of the table, determine: a) The mean study time for all the students. b) The median study time for all the students. 36 42 1.5 2.25 4) 75 d) The study time representing the 4th decile. e) The study time representing the 1st quartile. f) The study time representing the 3rd quartile. g) The interquartile range 95 c) The percent of college students who study between 20 and 36 hours per week. I andard on to th •ą 3
Transcribed Image Text:esc tab . caps hift * ! @ 80 F3 Study Hours z Score Percentile Rank 888 F4 MacBook Air 4 -2.5 F6 10 -1.75 44 F7 DII FB DD F9 236. A sample of the number of study hours per week of college students is collected. Some of the sample results of this sur- vey are given in the following table. 20 24 34 -0.5 0 1.25 4 50 F11 10 25 35 40 By inspection of the table, determine: a) The mean study time for all the students. b) The median study time for all the students. 36 42 1.5 2.25 4) 75 d) The study time representing the 4th decile. e) The study time representing the 1st quartile. f) The study time representing the 3rd quartile. g) The interquartile range 95 c) The percent of college students who study between 20 and 36 hours per week. I andard on to th •ą 3
Expert Solution
Step 1: Given Information

The sample results of the survey are given as

Study hoursZ-score percentile rank
4-2.510
10-1.7525
20-0.535
24040
341.2550
361.575
422.2595

The sample size is, n = 7

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