Here are summary statistics for randomly selected weights of newborn girls:

n=36,

x=3227.8

g,

s=686.4

g. Use a confidence level of

99%

to complete parts (a) through (d) below.

Question content area bottom

Part 1

a.

Identify

the critical value

t/2

used for finding the margin of error.

t/2=enter your response here

(Round to two decimal places as needed.)

Part 2

b. Find the margin of error.

E=enter your response here

g

(Round to one decimal place as needed.)

Part 3

c. Find the confidence interval estimate of

.

enter your response here

g<

g

(Round to one decimal place as needed.)

Part 4

d.

Write

a brief statement that interprets the confidence interval. Choose the correct answer below.

A.

There is a

99%

chance that the true value of the population mean weight of newborn girls will fall between the lower bound and the upper bound.

B.

Approximately

99%

of sample mean weights of newborn girls will fall between the lower bound and the upper bound.

.

C.One has

99%

confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls.

D.

One has

99%

confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.