Question

Consider the following random sample of diameter measurements (in inches) of

19

softballs:

4.89, 4.81, 4.68, 4.86, 4.88, 4.69, 4.71, 4.74, 4.87, 4.74, 4.72, 4.79, 4.75, 4.82, 4.69, 4.85, 4.73, 4.73, 4.89

If we assume that the diameter measurements are normally distributed, find a

95%

confidence interval for the mean diameter of a softball. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.)

What is the lower limit of the confidence interval?
What is the upper limit of the confidence interval?

Answer 1

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