It is of interest to know if the average time it takes police to reach the scene of an accident differs from that of an ambulance to reach the same accident. 1) Use the summary data listed below to estimate the difference in the times (measured in minutes) between the police and the ambulance using a 99% confidence interval, and interpret the interval. Show your working. Police Ambulance Sample size 60 55 Sample mean 4.2 4.1 Sample variance 0.08 0.10 2) Is it possible to conclude that arrival times for police and ambulance are different? Show your working.
It is of interest to know if the average time it takes police to reach the scene of an accident differs from that of an ambulance to reach the same accident. 1) Use the summary data listed below to estimate the difference in the times (measured in minutes) between the police and the ambulance using a 99% confidence interval, and interpret the interval. Show your working. Police Ambulance Sample size 60 55 Sample mean 4.2 4.1 Sample variance 0.08 0.10 2) Is it possible to conclude that arrival times for police and ambulance are different? Show your working.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
It is of interest to know if the average time it takes police to reach the scene of an accident differs from that of an ambulance to reach the same accident.
1) Use the summary data listed below to estimate the difference in the times (measured in
minutes) between the police and the ambulance using a 99% confidence interval, and
interpret the interval. Show your working.
Police |
Ambulance |
|
|
60 |
55 |
Sample |
4.2 |
4.1 |
Sample variance |
0.08 |
0.10 |
2) Is it possible to conclude that arrival times for police and ambulance are different? Show your working.
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