question 11:

Number of mobile sets is an example of

Discrete

Continuous

Constant

Not a applicable

QUESTION 12:

In hypergeometric experiments trials are?

independent

dependent

simultaneous

not applicable

QUESTION 13:

A survey found that one out of five Americans says he or she has visited a doctor in any given month. If 10 people are selected at random, find the probability that exactly 3 will have visited a doctor last month."

0.201

0.457

0.896

0.997

QUESTION 14:

Find the expectation of a random variable X? if X = 9, 11, 12, 13, 14, and P(X) = 0.2, 0.25, 0.3, 0.15, 0.1 respectivley "

11.5

4.5

9.5

14.5

QUESTION 15:

In binomial experimetns trials are?

independent

dependent

simultaneous

not applicable