This Test Assume the random variable X is normally distribut

This Test Assume the random variable X is normally distributed with mean = 50 and curve with the area corresponding to the probability shaded. P(x> 38) Click the icon to view a table of areas under the normal curve Which of the following normal curves coresponds to P(X>38)? 0B

Solution

Correct graph : A

Z value for 38, z=(38-50)/7 = -1.71

P( x >38) = P( z > -1.71)

= 0.9564