Luge is a winter sport in which a person slides down an ice track feet first on a small sled. The luger lies supine (on his back) and uses his calf and shoulder muscles to steer the sled. Below is a summary of the times, in seconds, of three luger's practice runs on a track in Utah.

Which of the following conclusions can be drawn based on th data in the table?

Options

A. Aeron performed the least consistently because his mean time is the lowest.
B. Mercelle performed the least consistently because his mean time is the highest
C. Aeron performed the least consistently because his mean time is the highest
D. Mercelle performed the least consistently because his mean time is the lowest.

Answer

D

Explanation

Difficult: Medium
Category: Problem Solving and Data Analysis/ Statistics and Probability.
Strategic Advice: Whenever information is presented in a table, be sure to read the column and row headers carefully and only use the infromation that applies to the question.
Getting to the Answer: Before you can apply percentage from the table, you need to determine how many men and how many women there were in the workforce in the district. The number of men was 53.5% of 12,800, `0.535times12,800=6,848`, and the number of women was `12,800-6,848=5,952`. Now, use the information from the table for
April:
Men: 5.5% of 6,484=`0.054times6,848=376.64`, or about 377 unemployed men.
Women: 5.4% of `5,952=0.054times5,952=321.408`, or about 321 unemployed women
This means there were `377-321=56` more unemployed men than women in the district in April. Choice (B) is correct.