Asked by Anonymous
A research firm conducted a survey to determine the mean amount people spend at
a popular coffee shop during a week. They found the amounts spent per week
followed a normal distribution, with a population standard deviation of $4. A sample
of 49 customers revealed that the mean is $25.
a) What is the 95% confidence interval estimate of µ?
b) What is the 99% confidence interval estimate of µ?
a popular coffee shop during a week. They found the amounts spent per week
followed a normal distribution, with a population standard deviation of $4. A sample
of 49 customers revealed that the mean is $25.
a) What is the 95% confidence interval estimate of µ?
b) What is the 99% confidence interval estimate of µ?
Answers
Answered by
Anonymous
23.88, 26.12
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