STAT TECH IN BUSINESS & ECON AC
18th Edition
ISBN: 9781264731657
Author: Lind
Publisher: MCG
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Chapter 5, Problem 87CE
a.
To determine
Find the overall percent defective.
b.
To determine
Find the
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A friend who lives in Los Angeles makes frequent consultingtrips to Washington, D.C.; 50% of the time shetravels on airline #1, 30% of the time on airline #2, and the remaining 20% of the time on airline #3. For airline#1, flights are late into D.C. 30% of the time and late intoL.A. 10% of the time. For airline #2, these percentagesare 25% and 20%, whereas for airline #3 the percentagesare 40% and 25%. If we learn that on a particular trip shearrived late at exactly one of the two destinations, whatare the posterior probabilities of having flown on airlines#1, #2, and #3? Assume that the chance of a late arrival inL.A. is unaffected by what happens on the flight to D.C.[Hint: From the tip of each first-generation branch on atree diagram, draw three second-generation brancheslabeled, respectively, 0 late, 1 late, and 2 late.]
Kentville, a community of 10,000 people, resides next to a krypton mine, and there is a concern that the emission from the krypton smelter have resulted in adverse effects. Specifically, Kryptonosis seems to have killed 12 of Kentville’s inhabitants last year. A neighboring community, Lanesburg, has 25,000 inhabitants and is far enough from the smelter to not be affected by the emission. In Lanesburg, only three people last year died of Kryptonosis. Given that the number of deaths in Kentville and their causes last year were: Heart attack=7 Accidents=4 Kryptonosis=12 Other=6
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A friend who lives in Los Angeles makes frequent consulting trips to Washington, D.C.;50% of the time she travels on airline #1, 30% of the time on airline #2, and the remaining 20% of the time on airline #3. For airline #1, flights are late into D.C.30% of the time and late into L.A.10% of the time. For airline #2,these percentages are 25% and 20%,whereas for airline #3 the percentages are 40% and 25%.If we learn that on a particular trip she arrived late at exactly one of the two destinations, what are the posterior probabilities of having flown on airlines #1,#2, and #3? Assume that the chance of a late arrival in L.A.is unaffected by what happens on the flight to D.C. [ Hint: From the tip of each first generation branch on a tree diagram, draw three second-generation branches labeled, respectively, 0 late,1late, and 2 late.]
Chapter 5 Solutions
STAT TECH IN BUSINESS & ECON AC
Ch. 5 - Prob. 1SRCh. 5 - One card will be randomly selected from a standard...Ch. 5 - Prob. 2.2SRCh. 5 - Prob. 2.3SRCh. 5 - Some people are in favor of reducing federal taxes...Ch. 5 - Prob. 2ECh. 5 - Prob. 3ECh. 5 - Prob. 4ECh. 5 - In each of the following cases, indicate whether...Ch. 5 - Prob. 6E
Ch. 5 - Prob. 7ECh. 5 - A sample of 2,000 licensed drivers revealed the...Ch. 5 - Bank of America customers select their own...Ch. 5 - Prob. 10ECh. 5 - Prob. 3SRCh. 5 - Prob. 4SRCh. 5 - Prob. 11ECh. 5 - Prob. 12ECh. 5 - Prob. 13ECh. 5 - The chair of the board of directors says, There is...Ch. 5 - Suppose the probability you will get an A in this...Ch. 5 - Two coins are tossed. If A is the event two heads...Ch. 5 - Prob. 17ECh. 5 - Prob. 18ECh. 5 - Prob. 19ECh. 5 - Prob. 20ECh. 5 - The aquarium at Sea Critters Depot contains 140...Ch. 5 - A National Park Service survey of visitors to the...Ch. 5 - From experience, Teton Tire knows the probability...Ch. 5 - The board of directors of Tarbell Industries...Ch. 5 - Refer to Table 51 on page 151 to find the...Ch. 5 - Consumers were surveyed on the relative number of...Ch. 5 - Prob. 23ECh. 5 - Prob. 24ECh. 5 - Prob. 25ECh. 5 - Prob. 26ECh. 5 - Prob. 27ECh. 5 - Prob. 28ECh. 5 - Prob. 29ECh. 5 - Prob. 30ECh. 5 - Prob. 31ECh. 5 - Prob. 32ECh. 5 - Prob. 9SRCh. 5 - Prob. 33ECh. 5 - Prob. 34ECh. 5 - Prob. 35ECh. 5 - Prob. 36ECh. 5 - The credit department of Lions Department Store in...Ch. 5 - Prob. 38ECh. 5 - Prob. 10.1SRCh. 5 - Prob. 10.2SRCh. 5 - Prob. 11.1SRCh. 5 - Prob. 11.2SRCh. 5 - Prob. 11.3SRCh. 5 - In a lottery game, three numbers are randomly...Ch. 5 - Prob. 39ECh. 5 - Prob. 40ECh. 5 - Prob. 41ECh. 5 - A telephone number consists of seven digits, the...Ch. 5 - An overnight express company must include five...Ch. 5 - A representative of the Environmental Protection...Ch. 5 - Sam Sneads restaurant in Conway, South Carolina,...Ch. 5 - A company is creating three new divisions and...Ch. 5 - The marketing research department at Pepsico plans...Ch. 5 - The number of times a particular event occurred in...Ch. 5 - The probability that the cause and the cure for...Ch. 5 - Berdines Chicken Factory has several stores in the...Ch. 5 - Prob. 51CECh. 5 - The first card selected from a standard 52-card...Ch. 5 - Prob. 53CECh. 5 - Refer to the following picture. a. What is the...Ch. 5 - Prob. 55CECh. 5 - Assume the likelihood that any flight on Delta...Ch. 5 - Prob. 57CECh. 5 - Prob. 58CECh. 5 - Prob. 59CECh. 5 - Prob. 60CECh. 5 - Prob. 61CECh. 5 - Forty percent of the homes constructed in the...Ch. 5 - Prob. 63CECh. 5 - Prob. 64CECh. 5 - Prob. 65CECh. 5 - Prob. 66CECh. 5 - Prob. 67CECh. 5 - Prob. 68CECh. 5 - Prob. 69CECh. 5 - An investor purchased 100 shares of Fifth Third...Ch. 5 - Flashner Marketing Research Inc. specializes in...Ch. 5 - Prob. 72CECh. 5 - Prob. 73CECh. 5 - Prob. 74CECh. 5 - Prob. 75CECh. 5 - Prob. 76CECh. 5 - Prob. 77CECh. 5 - Prob. 78CECh. 5 - Prob. 79CECh. 5 - Prob. 80CECh. 5 - Prob. 81CECh. 5 - Prob. 82CECh. 5 - Prob. 83CECh. 5 - Prob. 84CECh. 5 - Prob. 85CECh. 5 - Prob. 86CECh. 5 - Prob. 87CECh. 5 - ABC Auto Insurance classifies drivers as good,...Ch. 5 - Prob. 89CECh. 5 - The probability a D-Link network server is down is...Ch. 5 - Prob. 91CECh. 5 - Prob. 92DACh. 5 - Prob. 93DACh. 5 - Prob. 94DA
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- An aircraft emergency locator transmitter (ELT) is a device designed to transmit a signal in the case of a crash. The Altigauge Manufacturing Company makes 80% of the ELTS, the Bryant Company makes 15% of them, and the Chartair Company makes the other 5%. The ELTS made by Altigauge have a 4% rate of defects, the Bryant ELTS have a 6% rate of defects, and the Chartair ELTS have a 9% rate of defects (which helps to explain why Chartair has the lowest market share). i) If an ELT is randomly selected from the general population of all ELTS, find the probability that it was made by the Altigauge Manufacturing Company. If a randomly selected ELT is then tested and is found to be ii) defective, find the probability that it was made by the Altigauge Manufacturing Company.arrow_forwardAn aircraft emergency locator transmitter (ELT) is a device designed to transmit a signal in the case of a crash. The Altigauge Manufacturing Company makes 80% of the ELTS, the Bryant Company makes 15% of them, and the Chartair Company makes the other 5%. The ELTS made by Altigauge have a 4% rate of defects, the Bryant ELTS have a 6% rate of defects, and the Chartair ELTS have a 9% rate of defects (which helps to explain why Chartair has the lowest market share). a. If an ELT is randomly selected from the general population of all ELTS, find the probability that it was made by the Altigauge Manufacturing Company. b. If a randomly selected ELT is then tested and is found to be defective, find the probability that it was made by the Altigauge Manufacturing Company. c. What is the probablity that a randomly selected ELT is defective?arrow_forwardA large industrial firm uses three local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is faulty in 5% of the rooms at the Ramada Inn, in 4% of the rooms at the Sheraton, and in 8% of the rooms at the Lakeview Motor Lodge, what is the probability that a person with a room having faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? Select one: O a. 0.666 O b. 0.219 O c. 0.444 O d. 0.719arrow_forward
- A large industrial firm uses three local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is faulty in 5% of the rooms at the Ramada Inn, in 4% of the rooms at the Sheraton, and in 8% of the rooms at the Lakeview Motor Lodge, what is the probability that a person with a room having faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? Select one: O a.0.719 О.0.219 O c.0.666 O d. 0.444arrow_forwardThe question is in the imagearrow_forwardYou're a quality engineer at Norman's fouth largest cracker factory. where there are two production lines (A, which produces 20% of cracker boxes, and B which produces the rest). If a line produces more than one defective box in an eight -hour day, a maintenance check on the line is performed. Line A produces an average of 0.061 box defects PER Hour. Given that you're only looking at a line A, what is the probability that you will need a request a maitenance check.arrow_forward
- A friend who lives in Los Angeles makes frequent consulting trips to Washington, D.C.; 60% of the time she travels on airline # 1, 20% of the time on airline on airline # 3. For airline #1, flights are late into D.C. 40% of the time and late into L.A. 15% of the time. For airline #2, these percentages are 35% and 10%. If we learn that on a particular trip she arrived late at exactly one of the two destinations, and # 3? Assume that the chance of a late arrival in L.A. is unaffected by what happens on the flight to D.C. [Hint: second-generation branches labeled, respectively, 0 late, 1 late, and 2 late.] (Round your answers to four decimal airline #1 airline #2 airline #3 20% of the time whereas #2, and the remaining percentages for airline #3 the what are flown on airlines From the tip of each first-generation branch on a tree diagram, draw three places.) the posterior of having #1, #2, and 15%, probabilities are 35%arrow_forwardAn ad agency is developing a campaign to promote a business opening in new mall development. To develop an appropriate mailing list, they decide to purchase lists of credit card holders from MasterCard and American Express. Combining the lists, they find the following: 40 percent of the people on the list have only a MasterCard and 10 percent have only an American Express card. Another 20 percent hold both MasterCard and American Express. Finally, 30 percent of those on the list have neither card. The contingency table is as the following: MasterCard No MasterCard .10 American Express 20 No American Express.40 What is the probability that a person on the list does not have a Mastercard? Select one: O a. .90 O b. 40 O C. .18 d. .33 e. .70arrow_forwardSally Firefly purchases hardwood lumber for a custom furniture-building shop. She uses three suppliers, Northern Hardwoods, Mountain Top, and Spring Valley. Lumber is classified as either clear or has defects, which includes 20% of the pile. A recent analysis of the defect lumber pile showed that 30% came from Northern Hardwoods and 50% came from Mountain Top. Analysis of the clear pile indicates that 40% came from Northern and 40% came from Spring Valley. What is the percent of clear lumber from each of the three suppliers? What is the percent of lumber from each of the three suppliers?arrow_forward
- A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is faulty in 25% of the rooms at the Ramada Inn, in 35% of the rooms at the Sheraton, and in 40% of the rooms at the Lakeview Motor lodge, what is the probability that (a) a client will be assigned a room with faulty plumbing? (b) a person with a room having faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? (c) a person with a room having no faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? Round off the final answer to five decimal places.arrow_forwardA large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is faulty in 25% of the rooms at the Ramada Inn, in 35% of the rooms at the Sheraton, and in 40% of the rooms at the Lakeview Motor lodge, what is the probability that (a) a client will be assigned a room with faulty plumbing? (b) a person with a room having faulty plumbing was assigned accommodations at the Lakeview Motor Lodge? (c) a person with a room having no faulty plumbing was assigned accommodations at the Lakeview Motor Lodge?arrow_forwardConsider there are only two computer companies in a country. The companies are named “Dude” and “Imac”. Each year, company Dude keeps 1/5th of its customers, while the rest switch to Imac. Each year, Imac keeps 1/3rd of its customers, while the rest switch to Dude. If in 2002, Dude has 1/6th of the market and Imac has 5/6th of the market, what is the distribution of the market share between the two companies in 2003. (Hint: you can cast this as a matrix multiplication problem)arrow_forward
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