The following table shows the marks obtained by applicants for a certain job in an aptitude test. Sorted marks obtained by applicants 73 64 57 49 49 45 41 39 38 38 37 37 37 36 36 34 34 34 34 34 33 31 31 30 30 29 27 27 27 25 (i) Find the percentage of values that fall within two standard deviations around the mean. (ii) Find the percentage of values that fall within three standard deviations around the mean.

The following table shows the marks obtained by applicants for a certain job in an aptitude test. Sorted marks obtained by applicants 73 64 57 49 49 45 41 39 38 38 37 37 37 36 36 34 34 34 34 34 33 31 31 30 30 29 27 27 27 25 (i) Find the percentage of values that fall within two standard deviations around the mean. (ii) Find the percentage of values that fall within three standard deviations around the mean.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Question

The following table shows the marks obtained by applicants for a certain job in an aptitude test.
Sorted marks obtained by applicants
73
64
57
49
49
45
41
39
38
38
37
37
37
36
36
34
34
34
34
34
33
31
31
30
30
29
27
27
27
25
(i) Find the percentage of values that fall within two standard deviations around the mean.
(ii) Find the percentage of values that fall within three standard deviations around the mean.