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A set of data with a mean of 40 and a standard deviation of 5.1 is normally distributed find the value that is -2 standard deviations from the mean A.25.7 B.29.8 C.34.9 D.45.1
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A set of data with a mean of 40 and a standard deviation of 5.1 is normally distributed find the value that is -2 standard deviations from the mean

A.25.7
B.29.8
C.34.9
D.45.1

User Alfio
by
5.5k points

1 Answer

3 votes
Hello!

Since it is -2 deviations we are going down

We subtract 5.1 from 40 two times

40 - 5.1 = 34.9

34.9 - 5.1 = 29.8

The answer is 29.8

Hope this helps!
User Nicholas Hazen
by
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