A multiple choice exam of 10 questions was given to male and female students. The Grade X for each student the number of correctly answered questions. Grades for samples of 5 male and 10 female students were as follows: Grade X No. of Males 5 1 1 6 0 7 2 2 8 1 2 No. of Females a.Give 95% Confidence Interval (CI) for the mean males grades? b.Give 95% CI for the standard deviation of the females grades? c.Give 95% CI for the mean grade difference between male and female students? 9 0 3 10 1 2 Mean 7.4 0 7.3 Variance 3.3 1.8
A multiple choice exam of 10 questions was given to male and female students. The Grade X for each student the number of correctly answered questions. Grades for samples of 5 male and 10 female students were as follows: Grade X No. of Males 5 1 1 6 0 7 2 2 8 1 2 No. of Females a.Give 95% Confidence Interval (CI) for the mean males grades? b.Give 95% CI for the standard deviation of the females grades? c.Give 95% CI for the mean grade difference between male and female students? 9 0 3 10 1 2 Mean 7.4 0 7.3 Variance 3.3 1.8
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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please sir solve the first 3 parts
Transcribed Image Text:A multiple choice exam of 10 questions was given to male and female students.
The Grade X for each student the number of correctly answered questions. Grades for samples of 5
male and 10 female students were as follows:
Grade X
No. of
Males
No. of
Females
a.Give 95% Confidence Interval (CI) for the mean males grades?
b.Give 95% CI for the standard deviation of the females grades?
c.Give 95% Cl for the mean grade difference between male and female students?
d. Give 90%Cl for the ratio of grades standard deviations for male and female students?
e.Compute the mean grade of all 15 male and female students?
5
1
1
6
0
2
7
2
2
8
1
3
9
0
2
10
1
0
Mean
7.4
7.3
Variance
3.3
1.8
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