If a certain sample of data has a mean of 27.0 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?	Choose the correct choice from the following options: A) (24.0; 28.5) B) (24.5; 31.0) C) (25.0; 29.5) D) (19.5; 33.0) E) (24.0; 29.5)
The standard deviation is 2, so 2.5 standard deviations would be (2.5)(2) = 5.   The values between 22 and 32 are within 2.5 standard deviations from the mean.   The answer is (19.5; 33.0).
<result>D</result>
If a certain sample of data has a mean of 27.0 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?