The average size of forest fires last year was 968 acres with a standard deviation of 182 acres.How many standard deviations from the mean is a forest fire consuming 245 acres?
A)About 3.97 standard deviations below the mean
B)About 1.35 standard deviations above the mean
C)About 3.97 standard deviations above the mean
D)About 1.99 standard deviations below the mean
E)About 1.99 standard deviations above the mean

Question

Quizplus · Accepted Answer

To find how many standard deviations from the mean a value is, you subtract the mean from the value and divide by the standard deviation: (245 - 968) / 182 = -723 / 182 ≈ -3.97. This means the fire consuming 245 acres is about 3.97 standard deviations below the mean.

The Average Size of Forest Fires Last Year Was 968