If a certain sample of data has a mean of 29.0 and a standard deviation of 2.0, which of the following pairs contain two values that are each at least 2.5 standard deviations from the mean?
Pick one
A) (26.0; 36.5) B) (24.5; 31.0) C) (22.0; 35.5) D) (26.5; 36.0) E) (25.0; 29.5)
The standard deviation is 2, so 2.5 standard deviations would be (2.5)(2) = 5.   The values between 24 and 34 are within 2.5 standard deviations from the mean.   The answer is (22.0; 35.5).
<result>C</result>
If a certain sample of data has a mean of 29.0 and a standard deviation of 2.0, which of the following pairs contain two values that are each at least 2.5 standard deviations from the mean?