A new manufacturing plant has 20 job openings. To select the best 20 applicants from among the 1,000 job seekers, the plant's personnel office administers a written aptitude test to all applicants. The average score on the aptitude test is 150 points with a standard deviation of 10 points. Assume the distribution of test scores is approximately mound-shaped.
a. What percentage of the test scores will fall between 130 and 160 points?
Approximately . (Enter as a decimal percent or use the % sign.)
b. How many applicants will score between 130 and 160 points?
At least applicants.
c. One of the applicants scored 192 points on the test. What might you conclude about this test score?
________________

Question

A new manufacturing plant has 20 job openings. To select the best 20 applicants from among the 1,000 job seekers, the plant's personnel office administers a written aptitude test to all applicants. The average score on the aptitude test is 150 points with a standard deviation of 10 points. Assume the distribution of test scores is approximately mound-shaped.
a. What percentage of the test scores will fall between 130 and 160 points?
Approximately ______________. (Enter as a decimal percent or use the % sign.)
b. How many applicants will score between 130 and 160 points?
At least ______________ applicants.
c. One of the applicants scored 192 points on the test. What might you conclude about this test score?
____________________________

Jennifer Johnson · Accepted Answer

Final Answer : 81.5%; 750; The score should be regarded as an outlier.

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