Questions 3a through 3d are based on a distribution of scores withand the standard deviation = 6.

1.     Questions 3a through 3d are based on a distribution of scores with  and the standard deviation = 6.38. Draw a small picture to help you see what is required.

a.     What is the probability of a score falling between a raw score of 70 and 80?

b.     What is the probability of a score falling above a raw score of 80?

c.     What is the probability of a score falling between a raw score of 81 and 83?

d.     What is the probability of a score falling below a raw score of 63?