Interpret confidence interval

Reference no: EM13216062

A simple random sample of 120 clocks yields nine clocks with errors in assembly.

a. Compute the 99% confidence interval for the proportion of clocks with errors in assembly.

b. Interpret this confidence interval.

c. How large a sample size will need to be selected if we wish to have a 99% confidence interval that is accurate to within 1.5%?

Reference no: EM13216062

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