A) a measure of the average, or central value of a random variable B) a measure of the dispersion of a random variable C) the square root of the standard deviation D) the sum of the squared deviation of data elements from the mean A) a measure of the average, or central value of a random variable B) a measure of the dispersion of a random variable C) the square root of the standard deviation D) the sum of the squared deviation of data elements from the mean

Exhibit 5-11 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below: \(\begin{array}{ll}\text { Number of } & \\ \text { Breakdowns } & \text { Prabability } \\ 0 & 0.12 \\ 1 & 0.38 \\ 2 & 0.25 \\ 3 & 0.18 \\ 4 & 0.07 \end{array}\) -Refer to Exhibit 5-11. The expected number of machine breakdowns per month is

A) 2 B) 1.70 C) one, since it has the highest probability D) at least 4 A) 2 B) 1.70 C) one, since it has the highest probability D) at least 4

Exhibit 5-12 The police records of a metropolitan area kept over the past 300 days show the following number of fatal accidents. \(\begin{array}{cc}\text { Number of Fatal }\\ \text { Accidents }&\text { Number of Day }\\ 0 & 45 \\ 1 & 75 \\ 2 & 120 \\ 3 & 45 \\ 4 & 15 \end{array}\) -Refer to Exhibit 5-12. What is the probability that in a given day there will be no accidents?

A) 0.00 B) 1.00 C) 0.85 D) 0.15 A) 0.00 B) 1.00 C) 0.85 D) 0.15

Exam 5: Discrete Probability Distributions

Exhibit 5-7 The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish 3 days next week. Define the random variable X to be the number of days Pete catches fish. -Refer to Exhibit 5-7. The variance of the number of days Pete will catch fish is

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Question 101

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

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Question 102

Thirty-two percent of the students in a management class are graduate students. A random sample of 5 students is selected. Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students?

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Question 103

The standard deviation of a binomial distribution is

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Question 104

In a binomial experiment

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Question 105

On the average, 6.7 cars arrive at the drive-up window of a bank every hour. Define the random variable X to be the number of cars arriving in any hour. a. What is the appropriate probability distribution for X? Explain how X satisfies the properties of the distribution. b. Compute the probability that exactly 5 cars will arrive in the next hour. c. Compute the probability that no more than 5 cars will arrive in the next hour.

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Question 106

A numerical description of the outcome of an experiment is called a

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Question 107

The expected value of a random variable is

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Question 108

Exhibit 5-2 The student body of a large university consists of 60% female students. A random sample of 8 students is selected. -Refer to Exhibit 5-2. What is the probability that among the students in the sample at least 6 are male?

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Question 109

A random variable that may take on any value in an interval or collection of intervals is known as a

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Question 110

In a large university, 75% of students live in dormitories. A random sample of 5 students is selected. Use the binomial probability tables to answer the following questions. a. What is the probability that the sample contains exactly three students who live in the dormitories? b. What is the probability that the sample contains no students who lives in the dormitories? c. What is the probability that the sample contains more than three students who do not live in the dormitories? d. What is the expected number of students in the sample) who do not live in the dormitories?

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Question 111

Exhibit 5-7 The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish 3 days next week. Define the random variable X to be the number of days Pete catches fish. -Refer to Exhibit 5-7. The probability that Pete will catch fish on exactly one day is

(Multiple Choice)

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Question 112

The probability distribution for the rate of return on an investment is Rate of Return In Percent) Probability 9.5 .1 9.8 .2 10.0 .3 10.2 .3 10.6 .1 a. What is the probability that the rate of return will be at least 10%? b. What is the expected rate of return? c. What is the variance of the rate of return?

(Short Answer)

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Question 113

In a large corporation, 65% of the employees are male. A random sample of five employees is selected. Use the Binomial probability tables to answer the following questions. a. What is the probability that the sample contains exactly three male employees? b. What is the probability that the sample contains no male employees? c. What is the probability that the sample contains more than three female employees? d. What is the expected number of female employees in the sample?

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Question 114

Variance is

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Question 115

Exhibit 5-11 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below: Number of Breakdowns Prabability 0 0.12 1 0.38 2 0.25 3 0.18 4 0.07 -Refer to Exhibit 5-11. The expected number of machine breakdowns per month is

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Question 116

The hypergeometric probability distribution is identical to

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Question 117

General Hospital has noted that they admit an average of 8 patients per hour. a. What is the probability that during the next hour less then 3 patients will be admitted? b. What is the probability that during the next two hours exactly 8 patients will be admitted?

(Short Answer)

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Question 118

Exhibit 5-12 The police records of a metropolitan area kept over the past 300 days show the following number of fatal accidents. Number of Fatal Accidents Number of Day 0 45 1 75 2 120 3 45 4 15 -Refer to Exhibit 5-12. What is the probability that in a given day there will be no accidents?

(Multiple Choice)

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Question 119

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

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Question 120

Showing 101 - 120 of 122

Exhibit 5-7 The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish 3 days next week. Define the random variable X to be the number of days Pete catches fish. -Refer to Exhibit 5-7. The variance of the number of days Pete will catch fish is

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

Thirty-two percent of the students in a management class are graduate students. A random sample of 5 students is selected. Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students?

The standard deviation of a binomial distribution is

In a binomial experiment

A numerical description of the outcome of an experiment is called a

The expected value of a random variable is

Exhibit 5-2 The student body of a large university consists of 60% female students. A random sample of 8 students is selected. -Refer to Exhibit 5-2. What is the probability that among the students in the sample at least 6 are male?

A random variable that may take on any value in an interval or collection of intervals is known as a

Exhibit 5-7 The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish 3 days next week. Define the random variable X to be the number of days Pete catches fish. -Refer to Exhibit 5-7. The probability that Pete will catch fish on exactly one day is

Variance is

Exhibit 5-11 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below: Number of Breakdowns Prabability 0 0.12 1 0.38 2 0.25 3 0.18 4 0.07 -Refer to Exhibit 5-11. The expected number of machine breakdowns per month is

The hypergeometric probability distribution is identical to

General Hospital has noted that they admit an average of 8 patients per hour. a. What is the probability that during the next hour less then 3 patients will be admitted? b. What is the probability that during the next two hours exactly 8 patients will be admitted?

Exhibit 5-12 The police records of a metropolitan area kept over the past 300 days show the following number of fatal accidents. Number of Fatal Accidents Number of Day 0 45 1 75 2 120 3 45 4 15 -Refer to Exhibit 5-12. What is the probability that in a given day there will be no accidents?

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

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

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