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The Weekly Mean Income of a Group of Executives Is

Question 49

Multiple Choice

The weekly mean income of a group of executives is $1,000 and the standard deviation of this group is $100. The distribution is normal. What percent of the executives have an income of $925 or less?


A) About 15%
B) About 85%
C) About 50%
D) About 23%

Correct Answer:

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