Scores on the ACT test have a distribution that is approximately normal with mean 21.1 and standard deviation 5.1.
What is the probability that a student chosen at random will have an ACT score greater than 30? (Round z-scores to the nearest one-hundredth)
Answer
|
a. |
0.2843
|
|
b. |
0.0401
|
|
c. |
0.9599
|
|
d. |
Less than 0.0001
|