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Exam 5: Discrete Probability Distributions

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Question 41

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Discrete variables have values that can be measured.

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Question 42

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Find the standard deviation for the values of n and p when the conditions for the binomial distribution are met. N = 1000, p = 0.7

A) 210
B) 700
C) 14.5
D) 300

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Question 43

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A computer store has 75 printers of which 25 are laser printers and 50 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.

In binomial experiments, each trial can be viewed as having only two outcomes.

Continuous random variables are obtained from data that can be measured rather than counted.

A(n) __________ variable is one in which values are determined by chance.

Using the probability distribution listed, the mean would be 1.6.

The following distribution is not a probability distribution because

A jewelry supplier has a supply of earrings which are 10% platinum. A store owner orders five sets of earrings from the supplier. If the supplier selects the pairs of earrings at random, what is the chance that the jewelry store gets exactly two sets of platinum pairs?