As part of a health evaluation, investigators wanted to determine if mean serum cholesterol levels differed in young adult females in cities A and B. Serum cholesterol measurements were obtained from 11 randomly selected subjects from city A and 14 randomly selected subjects from city B. The sample data were as follows:

City A serum cholesterol levels:

192, 197, 202, 199, 180, 208, 209, 192, 201, 199, 209

City B serum cholesterol levels:

176, 193, 185, 191, 205, 194, 205, 201, 189, 194, 197, 190, 193, 196

QUESTION 1

State the appropriate null and alternative hypotheses.

H_o: u₁ =<> u₂

H_a: u₁ =<> u₂

QUESTION 2

x₁ =

QUESTION 3

x₂=

QUESTION 4

SS₁ =

QUESTION 5

SS₂=

2.5 points

QUESTION 6

s₁²=

QUESTION 7

s₂²=

5 points

QUESTION 8

s_p²=

QUESTION 9

s_x1-x2=

QUESTION 10

t =

QUESTION 11

Since |t| =<>fail to rejectrejectaccept t_0.05(2),23, we =<>fail to rejectrejectaccept H_o.

QUESTION 12

0.010.020.500.050.100.250.20 > p > 0.010.020.500.050.100.250.20

QUESTION 13

City A:95%Confidence Interval

Lower Limit=

QUESTION 14

City A:95%Confidence Interval

Upper Limit=

QUESTION 15

City B:95%Confidence Interval

Lower Limit=

QUESTION 16

CityB:95%Confidence Interval

Upper Limit=