1. Attendance at a university's basketball games follows a normal distribution with mean=8000

=8000and standard deviation =1000.Using the 68-95-99.7 Rule, what percentage of games have less than 7,000 people in attendance?

a. 16% b. 0.3% c. 2.5% d. 32% e. 5%

2.Suppose that the arithmetic mean of the natural log of five positive numbers is 1.234757. What is the geometric mean of these numbers? (Round your answer to four decimal places.)

3.A high school prom was attended by 70 girls and 40 boys. The morning after the prom, each girl was asked how many boys she danced with and each boy was asked how many girls he danced with. If the mean number of boys that the girls danced with is 2.8, what is the mean number of girls that the boys danced with? (Round your answer to two decimal places.)