Use the given information to find the number of degrees of freedom, the critical values

2L

and

2R,

and the confidence interval estimate of

.

It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution.

White Blood Counts of Women

90%

confidence;

n=146,

s=1.96

(1000

cells/L).

Question content area bottom

Part 1

df=enter your response here

Part 2

2L=

(Round to two decimal places as needed.)

Part 3

2R

(Round to two decimal places as needed.)

Part 4

The confidence interval estimate of

is

here

(1000

cells/L)<<

(1000

cells/L).

(Round to two decimal places as needed.)