8.25 A study was conducted to compare the mean number of police emergency calls per 8-hour shift in two districts of a large city. Samples of 100 8-hour shifts were randomly selected from the police records for each of the two regions, and the number of emergency calls was recorded for each shift. The sample statistics are given in the following table. er 8 Estimation 1 100 Region a Sample size Sample mean 2.4 Sample variance 1.44 2 : Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). that any suppressed content does not materially affect the overall learning experience. Cengage Leaming reserves the right to remove additional content at any time if subsequent rights restrictions require it. 100 3.1 2.64 Estimate the difference in the mean number of police emergency calls per 8-hour shift between the two districts in the city. b Find a bound for the error of estimation.
8.25 A study was conducted to compare the mean number of police emergency calls per 8-hour shift in two districts of a large city. Samples of 100 8-hour shifts were randomly selected from the police records for each of the two regions, and the number of emergency calls was recorded for each shift. The sample statistics are given in the following table. er 8 Estimation 1 100 Region a Sample size Sample mean 2.4 Sample variance 1.44 2 : Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). that any suppressed content does not materially affect the overall learning experience. Cengage Leaming reserves the right to remove additional content at any time if subsequent rights restrictions require it. 100 3.1 2.64 Estimate the difference in the mean number of police emergency calls per 8-hour shift between the two districts in the city. b Find a bound for the error of estimation.
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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Transcribed Image Text:8.25 A study was conducted to compare the mean number of police emergency calls per 8-hour shift
in two districts of a large city. Samples of 100 8-hour shifts were randomly selected from the
police records for each of the two regions, and the number of emergency calls was recorded
for each shift. The sample statistics are given in the following table.
er 8
Estimation
1
100
Region
a
Sample size
Sample mean
2.4
Sample variance 1.44
2
: Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
that any suppressed content does not materially affect the overall learning experience. Cengage Leaming reserves the right to remove additional content at any time if subsequent rights restrictions require it.
100
3.1
2.64
Estimate the difference in the mean number of police emergency calls per 8-hour shift
between the two districts in the city.
b
Find a bound for the error of estimation.
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