11) A company that rents DVDs from vending machines in grocery stores has developed the following probability distribution for the random variable x = the number of DVDs a customer
rents per visit to a machine.
1
0.5
2
0.3
3
0.1
4
0.1
P(X)
a) Find and interpret the mean (expected value) of X. (3 pts)

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

If kn = 9 cm, mn = 21 cm, rs = 42 cm, and ps = 18 cm, what is the scale factor of figure klmn to figure pqrs?

1/3(x-10)=-4 solve for x with steps