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81.Refer to Exhibit 5-11. The appropriate probability distribution for the

Question : 81.Refer to Exhibit 5-11. The appropriate probability distribution for the : 1329674

 

 

81.Refer to Exhibit 5-11. The appropriate probability distribution for the random variable is

a.discrete

b.continuous

c.either a or b depending on how the interval is defined

d.not enough information is given

 

 

 

82.Refer to Exhibit 5-11. The expected value of the random variable x is

a.2

b.5.3

c.10

d.2.30

 

 

 

83.Refer to Exhibit 5-11. The probability that there are 8 occurrences in ten minutes is

a..0241

b..0771

c..1126

d..9107

 

 

 

84.Refer to Exhibit 5-11. The probability that there are less than 3 occurrences is

a..0659

b..0948

c..1016

d..1239

 

 

 

85.When sampling without replacement, the probability of obtaining a certain sample is best given by a

a.hypergeometric distribution

b.binomial distribution

c.Poisson distribution

d.normal distribution

 

 

 

86.The key difference between the binomial and hypergeometric distribution is that with the hypergeometric distribution the

a.probability of success must be less than 0.5

b.probability of success changes from trial to trial

c.trials are independent of each other

d.random variable is continuous

 

 

 

87.Excel's HYPGEOM.DIST function can be used to compute

a.bin width for histograms

b.hypergeometric probabilities

c.cumulative hypergeometric probabilities

d.Both hypergeometric probabilities and cumulative hypergeometric probabilities are correct.

 

 

 

88.Excel's HYPGEOM.DIST function has how many inputs?

a.2

b.3

c.4

d.5

 

 

 

89.When using Excel's HYPGEOM.DIST function, one should choose TRUE for the fourth input if

a.a probability is desired

b.a cumulative probability is desired

c.the expected value is desired

d.None of the alternative answers is correct.

 

 

 

90.The binomial probability distribution is most symmetric when

a.n is 30 or greater

b.n equals p

c.p approaches 1

d.p equals 0.5

 

 

 

 

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