Hip surgery: In a sample of

120

hip surgeries of a certain type, the average surgery time was

136.3

minutes with a standard deviation of

22.3

minutes.

Part: 0 / 2

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Part 1 of 2

(a) Construct a

95%

confidence interval for the mean surgery time for this procedure. Round your answers to one decimal place.

A

95%

confidence interval for the mean surgery time for this procedure is

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