THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 118

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Let the random variable Z follow a standard normal distribution.
-The distribution of annual incomes of a sample of college graduates is normally distributed with a mean of $52,000 and a standard deviation of 1,000.About 68 percent of the incomes lie between what two income levels?

• A)52,000 and 62,000
• B)50,000 and 60,000
• C)51,000 and 53,000
• D)53,000 and 57,000