A final exam in Math 102 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is greater than 78. 0.0008 ' 0.8962 \\ 0.2608 ' 0.0103 QUESTION 6 Suppose that 80% of trees in a certain forest have a virus. We take a sample of 5 trees. Find the probability that at most 1 has the virus. ' ' .0064 ' \\ .0003 \" ' .0067 .0580 QUESTION 7 Suppose that 80% of trees in a certain forest have a virus. We take a sample of 5 trees. Find the probability that more than 3 have the virus. ' \\ .2627 / ' .6723 .3277 ' \\ .7373 QUESTION 8 Male players at the high school, college and professional ranks use a regulation basketball that weighs 22.0 ounces with a standard deviation of 1.0 ounce. Assume that the weights of basketballs are approximately normally distributed. If a regulation basketball is randomly selected, what is the probability that it will weigh between 19.5 and 22.5 ounces? Round to the nearest thousandth. 0.315 " 0.547 \\ 0.723 ' 0.685