Questions

In questions 1- 4 , assume a normal distribution with mean of 13.4 and standard deviation of 1.7. Find the indicated percentile.

1. 5th
2. 40th
3. 50th
4. 99th

In questions 5 and 6 assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the indicated percentiles.

5. 45th
6. 95th

In questions 7 and 8 assume that students between the ages of 15 and 18 spend an average of $45.34 each month. Further assume the amounts are normally distributed with a standard deviation of $9.18 per month. Find the indicated percentiles.

7. 40th
8. 90th

In questions 9 and 10 assume that the heights of men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the indicated percentiles.

9. 60th
10. 98th

11. In a normal distribution with a standard deviation of 0.4 the score of 20 corresponds to the 99.2th percentile. Find the mean of the distribution.