Statistics for Business & Economics, Revised (MindTap Course List)
Statistics for Business & Economics, Revised (MindTap Course List)
12th Edition
ISBN: 9781285846323
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Textbook Question
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Chapter 6, Problem 39SE

A business executive, transferred from Chicago to Atlanta, needs to sell her house in Chicago quickly. The executive’s employer has offered to buy the house for $210,000, but the offer expires at the end of the week. The executive does not currently have a better offer but can afford to leave the house on the market for another month. From conversations with her realtor, the executive believes the price she will get by leaving the house on the market for another month is uniformly distributed between $200,000 and $225,000.

  1. a. If she leaves the house on the market for another month, what is the mathematical expression for the probability density function of the sales price?
  2. b. If she leaves it on the market for another month, what is the probability she will get at least $215,000 for the house?
  3. c. If she leaves it on the market for another month, what is the probability she will get less than $210,000?
  4. d. Should the executive leave the house on the market for another month? Why or why not?

a.

Expert Solution
Check Mark
To determine

Obtain the mathematical expression for the probability density function.

Answer to Problem 39SE

The probability density function for sales price is,

f(x)={125,000for 200,000x250,0000            elsewhere

Explanation of Solution

Calculation:

The executive’s employer offers to buy a house for $210,000 and this offer will be expired by the end of the week. Post discussion with business executive’s relator, the seller believes that by leaving the house in the market for another month, the price for house will be uniformly distributed between $200,000 and $225,000.

The probability density function for uniform distribution is,

f(x)={1bafor axb0  elsewhere

The probability density function for sales price is,

f(x)={125,000for 200,000x250,0000            elsewhere

b.

Expert Solution
Check Mark
To determine

Find the probability that the house will get with at least $215,000.

Answer to Problem 39SE

The probability that the house will get with at least $215,000 is 0.4.

Explanation of Solution

Calculation:

The cumulative density function for uniform distribution is,

P(xX)=Xaba

The probability that the house will get with at least $215,000 is,

P(x>215,000)=1P(x215,000)=1215,000200,00025,000=115,00025,000=0.4

Thus, the value of P(x>215,000) is 0.4.

c.

Expert Solution
Check Mark
To determine

Find the probability that the house will get less than $210,000.

Answer to Problem 39SE

The probability that the house will get less than $210,000 is 0.4.

Explanation of Solution

Calculation:

The probability that the house will get less than $210,000 is,

P(x<210,000)=210,000200,00025,000=10,00025,000=0.4

Thus, the value of P(x<210,000) is 0.4.

d.

Expert Solution
Check Mark
To determine

Explain whether the executive can leave the house in the market for another month or not.

Answer to Problem 39SE

The executive can leave the house in the market for another month with an excepted cost of $212,000.

Explanation of Solution

Calculation:

If the house is left in market for another month, the average sales price of house is,

E(x)=a+b2=200,000+225,0002=425,0002=212,500

This indicates that if the executive leaves the house in the market for another month, then the expected sales price is $2,500 higher than the before price $210,000. If the house is left in the market for another month, the executive will get less than the company’s offer with 0.4 probability. It represents the executive to leave the house for another month in the market with an expected cost of $215,000.

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Chapter 6 Solutions

Statistics for Business & Economics, Revised (MindTap Course List)

Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - Given that z is a standard normal random variable,...Ch. 6.2 - For borrowers with good credit scores, the mean...Ch. 6.2 - The average return for large-cap domestic stock...Ch. 6.2 - In an article about the cost of health care, Money...Ch. 6.2 - The average price for a gallon of gasoline in the...Ch. 6.2 - A person must score in the upper 2% of the...Ch. 6.2 - Television viewing reached a new high when the...Ch. 6.2 - The time needed to complete a final examination in...Ch. 6.2 - Trading volume on the New York Stock Exchange is...Ch. 6.2 - According to the Sleep Foundation, the average...Ch. 6.3 - A binomial probability distribution has p = .20...Ch. 6.3 - Assume a binomial probability distribution has p =...Ch. 6.3 - Although studies continue to show smoking leads to...Ch. 6.3 - An Internal Revenue Oversight Board survey found...Ch. 6.3 - Playing video and computer games is very popular....Ch. 6.3 - A Bureau of National Affairs survey found that 79%...Ch. 6.4 - Consider the following exponential probability...Ch. 6.4 - Consider the following exponential probability...Ch. 6.4 - Battery life between charges for the Motorola...Ch. 6.4 - The time between arrivals of vehicles at a...Ch. 6.4 - Comcast Corporation is the largest cable...Ch. 6.4 - Collinas Italian Caf in Houston, Texas, advertises...Ch. 6.4 - Do interruptions while you are working reduce your...Ch. 6 - A business executive, transferred from Chicago to...Ch. 6 - The NCAA estimates that the yearly value of a full...Ch. 6 - Motorola used the normal distribution to determine...Ch. 6 - During early 2012, economic hardship was...Ch. 6 - Cond Nast Traveler publishes a Gold List of the...Ch. 6 - Ward Doering Auto Sales is considering offering a...Ch. 6 - Is lack of sleep causing traffic fatalities? A...Ch. 6 - Assume that the test scores from a college...Ch. 6 - According to Salary Wizard, the average base...Ch. 6 - A machine fills containers with a particular...Ch. 6 - Consider a multiple-choice examination with 50...Ch. 6 - A blackjack player at a Las Vegas casino learned...Ch. 6 - The Information Systems Audit and Control...Ch. 6 - The website for the Bed and Breakfast Inns of...Ch. 6 - The American Community Survey showed that...Ch. 6 - The time (in minutes) between telephone calls at...Ch. 6 - Specialty Toys Specialty Toys, Inc., sells a...
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