Contaminated water:In a sample of

40

water specimens taken from a construction site,24

contained detectable levels of lead.Part 1 of 3

Your Answer is correct

(a) Construct a

99

%

confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answers to at least three decimal places.

A99

%

confidence interval for the proportion of water specimens that contain detectable levels of lead is0.4005

<

<

p

0.7995

.

Part:1 / 3

1 of 3 Parts Complete

Part 2 of 3

(b) Construct a

95

%

confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answers to at least three decimal places.

A95

%

confidence interval for the proportion of water specimens that contain detectable levels of lead is

<

<

p

.