A medical investigation claims that the average number of infections per week at a hospital is 13.7. A random sample of 10 weeks had a mean number of 14.8 infections. The sample standard deviation is 1.3. Is there enough evidence to reject the investigator's claim at a = 0.05 ? [5m]

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A medical investigation claims that the average number of infections per week at a hospital
is 13.7. A random sample of 10 weeks had a mean number of 14.8 infections. The sample
standard deviation is 1.3. Is there enough evidence to reject the investigator's claim at
a = 0.05 ?
[5m]
Transcribed Image Text:A medical investigation claims that the average number of infections per week at a hospital is 13.7. A random sample of 10 weeks had a mean number of 14.8 infections. The sample standard deviation is 1.3. Is there enough evidence to reject the investigator's claim at a = 0.05 ? [5m]
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