Question

According to the U. S. Labor Department, average weekly wages in February 2013 were $ 822. Assume weekly wages in the United States follow the normal distribution with a standard deviation of $ 190.
a. What is the probability that a randomly selected worker in the United States earned
1. Less than $ 900 per week?
2. Between $ 800 and $ 920 per week?
3. Between $ 550 and $ 700 per week?
4. Between $ 750 and $ 1,100 per week?
b. Confirm the answers to part a with Excel or PHStat.
c. What weekly wage will a person earn if he or she is in the 45th percentile?


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  • CreatedJuly 17, 2015
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