calculate probability

Question

the verbal subscale on the SAT (SAT-CR) has a normal distribution with a mean of 500. and a standard deviation of 100. Consider the roughly one million high school seniors who took the SAT last year. If one of these students is selected at random, what is the probability that his or her SAT-CR score will be:

(e) The probability is .50 that the student’s SAT-CR score will be between what two values?

(f) The probability is .10 that the student’s SAT-CR score will fall above an SAT-CR score of _____?

(g) The probability is .10 that the student’s SAT-CR score will fall below an SAT-CR score of _____

Answer 1

a) Question: The probability is 0.50 that the student’s SAT-CR score will be between what two values?

Answer: Between 433 and 567

(b) Question: The probability is 0.10 that the student’s SAT-CR score will fall above an SAT-CR score of ____?

Answer: 628

(c) The probability is 0.10 that the student’s SAT-CR score will fall below an SAT-CR score of ___?

Answer: 372

Answer 2

Calculate probability

The verbal subscale on the SAT (SAT-CR) has a normal distribution with a mean of 500. and a standard deviation of 100. Consider the roughly one million high school seniors who took the SAT last year. If one of these students is selected at random, what is the probability that his or her SAT-CR score will be:

(a) Question: The probability is 0.50 that the student’s SAT-CR score will be between what two values?

Answer: Between 549 and 551

(b) Question: The probability is 0.10 that the student’s SAT-CR score will fall above an SAT-CR score of  ____?

Answer: 372

(c) The probability is 0.10 that the student’s SAT-CR score will fall below an SAT-CR score of ___?

Answer: 372