A Researcher Was Interested in Comparing the Heights of Women

Multiple Choice

A researcher was interested in comparing the heights of women in two different countries.Independent random samples of 9 women from country A and 9 women from country B yielded the following heights (in centimetres) .
Determine a 90% confidence interval for the difference,
-
,between the mean height of women in Country A and the mean height of women in Country B.

A) (0.4,10.7)
B) (1.4,9.2)
C) (0.8,14.2)
D) (161.4,164.3)
E) (0.7,4.2)