Exam 5: Discrete Probability Distributions

Exhibit 5-5 AMR is a computer-consulting firm. The number of new clients that they have obtained each month has ranged from 0 to 6. The number of new clients has the probability distribution that is shown below. -Refer to Exhibit 5-5. The variance is

Exhibit 5-2 The probability distribution for the daily sales at Michael's Co. is given below. -Refer to Exhibit 5-2. The probability of having sales of at least $50,000 is

A description of how the probabilities are distributed over the values the random variable can assume is called a

Which of the following is not a required condition for a discrete probability function?

Assume that you have a binomial experiment with p  0.4 and a sample size of 50. The variance of this distribution is

Exhibit 5-5 AMR is a computer-consulting firm. The number of new clients that they have obtained each month has ranged from 0 to 6. The number of new clients has the probability distribution that is shown below. -Refer to Exhibit 5-5. The expected number of new clients per month is

In a large corporation, 65% of the employees are male. A random sample of five employees is selected. a.Define the random variable in words for this experiment. b.What is the probability that the sample contains exactly three male employees? c.What is the probability that the sample contains no male employees? d.What is the probability that the sample contains more than three female employees? e.What is the expected number of female employees in the sample?

Excel's POISSON.DIST function can be used to compute

In a large university, 15% of the students are female. If a random sample of twenty students is selected, a.what is the probability that the sample contains exactly four female students? b.what is the probability that the sample will contain no female students? c.what is the probability that the sample will contain exactly twenty female students? d.what is the probability that the sample will contain more than nine female students? e.what is the probability that the sample will contain fewer than five female students? f. what is the expected number of female students?

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -Refer to Exhibit 5-7. The expected number of cups of coffee is

Sandy's Pet Center grooms large and small dogs. It takes Sandy 40 minutes to groom a small dog and 70 minutes to groom a large dog. Large dogs account for 20% of Sandy's business. Sandy has 5 appointments tomorrow. a. What is the probability that all 5 appointments tomorrow are for small dogs? b. What is the probability that two of the appointments tomorrow are for large dogs? c. What is the expected amount of time to finish all five dogs tomorrow?

The variance is a weighted average of the

Excel's POISSON.DIST function has how many inputs?

The variance for the binomial probability distribution is

Exhibit 5-10 The probability that Pete will catch fish on a particular day when he goes fishing is 0.8. Pete is going fishing 3 days next week. -Refer to Exhibit 5-10. The variance of the number of days Pete will catch fish is

When dealing with the number of occurrences of an event over a specified interval of time or space and when the occurrence or nonoccurrence in any interval is independent of the occurrence or nonoccurrence in any other interval, the appropriate probability distribution is a

Exhibit 5-2 The probability distribution for the daily sales at Michael's Co. is given below. -Refer to Exhibit 5-2. The expected daily sales are

A company sells its products to wholesalers in batches of 1,000 units only. The daily demand for its product and the respective probabilities are given below. a.Determine the expected daily demand. b.Assume that the company sells its product at $3.75 per unit. What is the expected daily revenue?

Exhibit 5-4 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below. -Refer to Exhibit 5-4. The expected number of machine breakdowns per month is

Exhibit 5-9 Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected. -Refer to Exhibit 5-9. The probability that the sample contains 2 female voters is