Question

A test measuring the knowledge of the U.S. Constitution has been given to a national sample of 6000 high school seniors.  The distribution of scores approximates the normal curve and has a mean of 79 and a standard deviation of 6.0.

to receive credit you must show your work!

a.

what percentage of those tested scored 68 or below?

b.

what percentage and how many of the 6000 individuals scored between 68 and 87?

c.

I want to give the top 8% of the students a prize for doing

such a great job on the exam.  What would be the lowest score

eligible for a prize?

Answer 1

TOPIC:Use of the Normal distribution to find the required probabilities.