Share
Explore BrainMass

Probability

A normal distribution has a mean of 50 and a standard deviation of 4.
a-compute the probability of a value between 44.0 and 55.0.
b-compute the probability of a value greater than 55.0.
c-compute the probability of a value between 52.0 and 55.0

Solution Preview

Hello

Please see the response as below.

A normal distribution has a mean of 50 and a standard deviation of 4.
Mean = 50, standard deviation = 4

a-compute the probability of a value between 44.0 and 55.0.
First we calculate z statistics, z = (x - mean)/standard deviation
For 44, which falls on the left of mean, the z statistics is
Z = (44 - 50)/4 = - 1.5. In the table of standard normal ...

Solution Summary

Solution shows calculation of probability.

$2.19