Textbook ExpertVerified Tutor
20 Dec 2021
Given information
The population's average delay is 
minutes, with a maximum variance of 
minutes.
minutes, with a maximum variance of minutes.The sample average is 
minutes, with a -minute standard deviation.
minutes, with a -minute standard deviation.Additional testing of the average delay claim.
Step-by-step explanation
Step 1.
We can utilize the t-distribution because the sample size is small 
and extra data on the average latency is provided. The t-distribution equation is as follows.
The sample standard deviation and sample size are denoted by 
and 
, respectively.
Therefore, the t-distribution can be used because the sample standard deviation, sample size, and sample average are all known, and the population average can be determined.
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
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