9) While Calvin Butterball was at the county fair, he played the balloon game to try to win a prize for his sister. The game consists of 15 balloons attached to a vertical rectangular board. Each balloon has a diameter of 4 in. If Calvin pops a balloon with a dart, he wins a prize. Assuming that all of the darts hit the board at random, what is the probability of the following events? He pops a ballon.

He misses every ballon.

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables