Question

Sherry missed the lesson on normal distribution and needs to do her homework. Explain to Sherry how to use the mean and standard deviation of a normal distribution to determine the top 7% of the population.

Answer 1

I don't know how..

Answer 2

The scores on a college entrance exam are normally distributed with a mean of 80 and standard of deviation of 12. If the college wishes only the top 7% of people to get accepted, what would the cutoff score be?

Answer 3

This example will illustrate the process.

Answer 4

Would it be 80?

Answer 5

50% of the students get 80 or less, 50% get 80 or more

Answer 6

we only want the top 7%

Answer 7

@perl can u finish helping me on my problem?

Answer 8

So, half.