Question 87989
pROBLEM #1
In 2002, eleven state governors earned at least $124, 000 annually (not counting expense allowances) as listed below. (Salaries are given in thousands of dollars and are arounded to the nearest $1000).* 
State & Salary
California $175
Georgia $127
Illinois $150
Massachusetts $135
Michigan $177
New Mexico $150
New York $ 179
Pennsylvania $142
Vermont $125
Virginia $125
Washington $142 

a) 
Find the mean salary of these governors.
Answer: Add the numbers and divide by 11 to get $147.91
Which states have the governor with the salary closest to the mean?
I'll let you answer that.
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b) Find the standard deviation for the data.
Answer: Use your TI calculator to get 20.686 
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c) What percent of the governors have salaries within 1
standard deviation of the mean?
Answer: Count the number and divide by 11 to get the per cent.
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d) What percent of the governors have salaries within 3
standard deviations of the mean?
Answer: Same procedure
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Cheers,
Stan H.