1. The Bronx residents smoke in the average 10 cigarettes a day. Assuming that smoking in the Bronx has a normal distribution with standard deviation 8 what percent of the Bronx smoke atleast a pack of(20) cigarettes a day.

a. approximatelly 10 %

b. approximatelly11 %

c. approximatelly 12 %

d. approximatelly 13 %

2. TheGPA at the BEST UNIVERSITY has a normal distribution with a mean2.46 and standard deviation1.13. Approximatelly what percent of the BEST UNIVERSITY students have their GPA below 1.54.

a.79.1%

b.20.9%

c.71%

d.29.1%

3. The average price of a PC is $949. If the computer prices are approximately normally distributed with standard deviation of $100, what is the probability that arandomly selected PC costs morethan $1200?

a. 6 %

b. .9940

c. .006

d. .4940