Repeat Exercise 37 changing the sample size to n Repeat Exercise 37, changing the sample size to n =

Repeat Exercise 37 changing the sample size to n Repeat Exercise 37, changing the sample size to n =

Repeat Exercise 37 changing the sample size to n
Repeat Exercise 37, changing the sample size to n = 80. Which confidence interval is wider? Explain.

Exercise 37

You work for a consumer advocate agency and want to estimate the population mean cost of replacing a car’s transmission. As part of your study, you randomly select 50 replacement costs and find the mean to be $2650.00. Assume the population standard deviation is $425.00. Construct a 95% confidence interval for the population mean replacement cost. Interpret the results.

Repeat Exercise 37 changing the sample size to n

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