A sample of size

=

n

56

is drawn from a normal population whose standard deviation is=

9.9

. The sample mean is=

x

43.81

.

Part 1 of 2

Your Answer is incorrect

(a) Construct a

99.8

%

confidence interval for

. Round the answer to at least two decimal places.A99.8

%

confidence interval for the mean is

<

<

.