Question
The waiting times ( in minutes) of a random sample of 22 people at a bank...
The waiting times ( in minutes) of a random sample of
22 people at a bank have a sample standard deviation of 4.5
minutes. Construct a confidence interval for the population
variance o2 and the population standard deviation o. Use a 95%
level of confidence. Assume the sample is from a normally
distributed population.
What is the confidence interval for the population variance
o2?
standard deviation o.
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