A popular restaurant takes a random sample of 25 customers and records how long each occupied a table. They found a sample mean of 1.2 hours and a sample standard deviation of 0.3 hour. Construct a 95% confidence interval estimate of the mean of the population. A The mean is within the interval having the endpoints 1.2 ± 3.69. (B) The mean is within the interval having the endpoints 1.2 ± 1.12. The mean is within the interval having the endpoints 1.2 + 0.27. The mean is within the interval having the endpoints 1.2 + 0.12.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A popular restaurant takes arandom sample of 25 customers and records how long each occupied a table.
They found a sample mean of 1.2 hours and a sample standard deviation of 0.3 hour. Construct a 95%
confidence interval estimate of the mean of the population.
A
The mean is within the interval having the endpoints 1.2 ± 3.69.
The mean is within the interval having the endpoints 1.2 ± 1.12.
The mean is within the interval having the endpoints 1.2 + 0.27.
D
The mean is within the interval having the endpoints 1.2 + 0.12.
Transcribed Image Text:A popular restaurant takes arandom sample of 25 customers and records how long each occupied a table. They found a sample mean of 1.2 hours and a sample standard deviation of 0.3 hour. Construct a 95% confidence interval estimate of the mean of the population. A The mean is within the interval having the endpoints 1.2 ± 3.69. The mean is within the interval having the endpoints 1.2 ± 1.12. The mean is within the interval having the endpoints 1.2 + 0.27. D The mean is within the interval having the endpoints 1.2 + 0.12.
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