Females a.Give 95% Confidence Interval (CI) for the mean males grades? b.Give 95% CI for the standard deviation of the females grades? ?
Females a.Give 95% Confidence Interval (CI) for the mean males grades? b.Give 95% CI for the standard deviation of the females grades? ?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Question
please sir solve parts a and b only
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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