Alg 2 Unit 8 Lesson 5: Normal Distribution

A normally distributed data set has a mean of 0 and a standard deviation of .5. Which is closest to the percent of values between -1 and 1?

How should we identify the area under the curve in the following figure?

What area under the curve is represented in the figure?

What area under the curve is represented in the figure?

A machine is used to put bolts into boxes. It does so such that the actual number of bolts in a box is normally distributed with a mean of 106 and a standard deviation of 2. What is the probability of selecting a box that contains less than 108 bolts?

2000 freshman at NC State University took a biology test. The scores were distributed normally with a mean of 70 and a standard deviation of 5. What percentage of scores are between 65 and 75?

500 juniors at Central High School took the ACT last year. The scores were distributed normally with a mean of 24 and standard deviation of 4. Approximately how many juniors scored between 24 and 28?

How did you feel about today's lesson? How confident were you about the material?