Multiple Choice: We wish to see if there is a difference in the proportion of me

Question

Multiple Choice: We wish to see if there is a difference in the proportion of men and women who drive SUVs. Denote proportion of men as p and proportion of women as pw. A 95% confidence interval for pw-pw was found to be (-0.23,-0.05) what can we conclude based on this interval? 3. a) The proportion of men who driv SUVs is higher than the proportion of women. b) The proportion of women who drive SUVs is higher than the proportion of men. c) There is no significant difference in the proportion of men who drive SUVs and the proportion of women who drive SUVs.

Explanation / Answer

Answer: b)The proportion of women who drive SUVs is more than the proportion of men.

Reason : As in the confidence interval of pm-pw, both upper confidence limit and lower confidence limit ar negative numbers, which means pm-pw<0,

which means pw > pm.

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