Question
A school bus driver records the time (in minutes) it takes to commute to school for six days. Those results are: 25, 22, 17, 20,
A school bus driver records the time (in minutes) it takes to commute to school for six days. Those results are: 25, 22, 17, 20, 15, and 10. Assuming the population is normally distributed, develop a 95% confidence interval for the population mean. The confidence interval is:
A. 18.17 ± 4.40
B. 18.17 ± 5.61
C. 18.17 ± 4.27
D. 18.17 ± 8.80
Step by Step Solution
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There are 3 Steps involved in it
Step: 1
Sample mean x xn x 25 22 17 20 15 106 1096 1817 Sample variance s 2 ...
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A Pathway To Introductory Statistics
Authors: Jay Lehmann
1st Edition
0134107179, 978-0134107172
