A random variable X is normally distributed with a mean of 250 and a standard deviation of 50.
Given a particular value for X-225, its corresponding Z-score is -
(round the answer to 4 digits after the decimal)
-0.5000
O 0.0070
cannot be determined
0.0000
None of the other answers listed here are correct
0.5000
0.6915
0.3085