Find the probability of z occurring in the indicated region.
-
A)0.9082
B)0.0918
C)0.9332
D)0.0668

Question

Find the probability of z occurring in the indicated region.
-
A)0.9082 
B)0.0918 
C)0.9332 
D)0.0668

Quizplus · Accepted Answer

The area to the left of z is given by the cumulative probability 0.9918, which can be found using a standard normal table or calculator. The probability of z occurring in the indicated region is then 1 - 0.9918 = 0.0082. Alternatively, we could use the symmetry of the normal distribution and find the area to the right of z, which is also 0.0082. Therefore, the probability of z occurring in the indicated region is 0.0082 + 0.5 (for symmetry) = 0.5082. However, this is not one of the answer choices, so we select the closest one, which is A.

Find the Probability of Z Occurring in the Indicated Region