Shown are the ages (in years) of the Presidents at the times of their deaths. 67 90 83 85 73 80 78 79 68 71 53 65 74 64 77 56 66 63 70 49 57 71 67 71 58 60 72 67 57 60 90 63 88 78 46 64 81 93 93 a/ Do the data represent a population or a sample? b/ Select a random sample of 15 ages and
Shown are the ages (in years) of the Presidents at the times of their deaths. 67 90 83 85 73 80 78 79 68 71 53 65 74 64 77 56 66 63 70 49 57 71 67 71 58 60 72 67 57 60 90 63 88 78 46 64 81 93 93 a/ Do the data represent a population or a sample? b/ Select a random sample of 15 ages and
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
Related questions
Question
Shown are the ages (in years) of the Presidents at the times of their deaths.
67 |
90 |
83 |
85 |
73 |
80 |
78 |
79 |
68 |
71 |
53 |
65 |
74 |
64 |
77 |
56 |
66 |
63 |
70 |
49 |
57 |
71 |
67 |
71 |
58 |
60 |
72 |
67 |
57 |
60 |
90 |
63 |
88 |
78 |
46 |
64 |
81 |
93 |
93 |
|
a/ Do the data represent a population or a sample?
b/ Select a random sample of 15 ages and find the variance and standard deviation.
c/ Find the 98% confidence interval of the standard deviation.
d/ Find the standard deviation of all the data values.
e/ Does the confidence interval calculated in part c/ contain the standard deviation?
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