Question

On a test that has a normal distribution, a score of 82 falls three standard deviations above the mean, and a score of 64 falls one standard deviation above the mean. Determine the mean of this test.

Answer 1

Answer: mean = 55

Explanation:

Distance between 64 and 82 = 18

Each standard deviation is worth 9 units.

So 64 - 9 = 55(mean)

Or use m= x-zq