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A data set has a mean of 60 and a standard deviation of 5. Which of...

A data set has a mean of 60 and a standard deviation of 5. Which of the following might possibly be true?


A) At least 15% of the data values are less than 45 or greater than 75.

B) More than 90% of the data values are between 45 and 75

C) No less than 30% of the data values are less than 50 or greater than 70

D) No more than 50% of the data values are between 50 and 70

Please show all work and list formulas used! Will give thumbs up

Thank you!!!!

Math   Statistics-And-Probability   
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