An experiment consists of making 80 telephone calls in order to sell a particular insurance policy. The random variable in this experiment is a Select one: a. discrete random variable b. continuous random variable c. complex random variable d. simplex random variable

a. discrete random variable

Step-by-step explanation:

A discrete random variable is one which may take on only a countable number of distinct values such as 0, 1, 2, 3, 4, etc. Discrete random variables are usually countable.

From the question:

The experiment consist of making 80 telephone calls in order to sell a particular insurance policy. 80 here is the random variable; 80 is countable anf finite.

So, 80 is a discrete random variable

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

its kind of blurry. can you put a clearer pic?

step-by-step explanation: