The scores of an entrance exam for a high school in a particular year were bell-shaped in nature. If the mean and standard deviation were 350 and 50 respectively, then:

P(200 ≤ X ≤ 500) = 0.9973

Step-by-step explanation:

Let assume that the question intends us to find what percentage of students scored between 500 and 200 on this test.

Given that:

We need to first compute the Z test statistics

Thus;

it would be:

c.parallelogram.

go on the tube you might find some information there