The Mean Age of All High School Teachers in New

question 31

Multiple Choice

The mean age of all high school teachers in New York state is 41 years and the standard deviation is 6 years.According to Chebyshev's theorem,the percentage of teachers in New York who are 23 to 59 years old is at least:

• A)88.89
• B)77.78
• C)84.39
• D)90.89

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