Surgical complications: A medical researcher wants to construct an

80%

confidence interval for the proportion of knee replacement surgeries that result in complications.

Part: 0 / 2

0 of 2 Parts Complete

Part 1 of 2

(a) An article in a medical journal suggested that approximately

17%

of such operations result in complications. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of

0.05

?

A sample of

operations is needed to obtain an

80%

confidence interval with a margin of error of

0.05

using the estimate

0.17

for

p

.