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41.Refer to Exhibit 5-7. The variance of the number of

Question : 41.Refer to Exhibit 5-7. The variance of the number of : 1329670

 

 

41.Refer to Exhibit 5-7. The variance of the number of cups of coffee is

a..96

b..9798

c.1

d.2.4

 

 

 

42.Which of the following is a characteristic of a binomial experiment?

a.at least 2 outcomes are possible

b.the probability of success changes from trial to trial

c.the trials are independent

d.All of these answers are correct.

 

 

 

43.In a binomial experiment, the

a.probability of success does not change from trial to trial

b.probability of success does change from trial to trial

c.probability of success could change from trial to trial, depending on the situation under consideration

d.All of these answers are correct.

 

 

 

44.Which of the following is not a characteristic of an experiment where the binomial probability distribution is applicable?

a.the experiment has a sequence of n identical trials

b.exactly two outcomes are possible on each trial

c.the trials are dependent

d.the probabilities of the outcomes do not change from one trial to another

 

 

 

45.Which of the following is not a property of a binomial experiment?

a.the experiment consists of a sequence of n identical trials

b.each outcome can be referred to as a success or a failure

c.the probabilities of the two outcomes can change from one trial to the next

d.the trials are independent

 

 

 

46.A probability distribution showing the probability of x successes in n trials, where the probability of success does not change from trial to trial, is termed a

a.uniform probability distribution

b.binomial probability distribution

c.hypergeometric probability distribution

d.normal probability distribution

 

 

 

47.The binomial probability distribution is used with

a.a continuous random variable

b.a discrete random variable

c.any distribution, as long as it is not normal

d.All of these answers are correct.

 

 

 

48.If you are conducting an experiment where the probability of a success is .02 and you are interested in the probability of 4 successes in 15 trials, the correct probability function to use is the

a.standard normal probability density function

b.normal probability density function

c.Poisson probability function

d.binomial probability function

 

 

 

49.In a binomial experiment the probability of success is 0.06. What is the probability of two successes in seven trials?

a.0.0036

b.0.06

c.0.0554

d.0.28

 

 

 

50.Four percent of the customers of a mortgage company default on their payments. A sample of five customers is selected. What is the probability that exactly two customers in the sample will default on their payments?

a.0.2592

b.0.0142

c.0.9588

d.0.7408

 

 

 

 

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