# Two stores sell a certain mp3 players store a has 34

• Test Prep
• 5
• 93% (15) 14 out of 15 people found this document helpful

This preview shows page 2 - 4 out of 5 pages.

41Math

Two stores sell a certain MP3 players Store A has 34 of the sales 5 of which from MATH 213 at University of Kentucky

67 )   Find P ( M A Q ) . Give your answer as a fraction . 67 ) a = 0.3 , b = 0.7 , c = 0.3 , d = 0.6 , e = 0.1 , f = 0.2 , g = 0.5, h = 0.3
A ) 35 53
B ) 7 20
C ) 53 100
D ) 1 2
68 )   One urn has 4 red balls and 1 white ball ; a second urn has 2 red balls and 3 white balls . A single card is randomly selected from a standard deck . If the card is less than 5 aces count as 1 , a ball is drawn out of the first urn ; otherwise a ball is drawn out of the second urn . If the drawn ball is red , what is the probability that it came out of the second urn ?
69 )   Two shipments of components were received by a factory and stored in two separate bins . Shipment I has 2 % of its contents defective , while shipment II has 5 % of its contents defective . If it is equally likely an employee will go to either bin and select a component randomly , what is the probability that a defective component came from shipment II ?
70 )   Two stores sell a certain MP3 players . Store A has 34 % of the sales , 5 % of which are of defective items , and store B has 66 % of the sales , 1 % of which are of defective items . The difference in defective rates is due to different levels of pre - sale checking of the product . A person receives a defective item of this product as a gift . What is the probability it came from store B ?
71 )   The incidence of a certain disease on the island of Tukow is 4 % . A new test has been developed to diagnose the disease . Using this test , 91 % of those who have the disease test positive while 4 % of those who do not have the disease test positive ( false positive ) . If a person tests positive , what is the probability that he or she actually has the disease ?
A ) 0.856
B ) 0.91
C ) 0.438
D ) 0.487
72 )   Quality Motors has three plants . Plant 1 produces 35 % of the car output , plant 2 produces 20 % and plant 3 produces the remaining 45 % . One percent of the output of plant 1 is defective , 1.8 % of the output of plant 2 is defective and 2 % of the output of plant 3 is defective . The annual total production of Quality Motors is 1,000,000 cars . A car chosen at random from the annual output and is found defection . What is the probability that it came from plant 2 ?
73 )   In Cumberland County , 55 % of registered voters are Democrats , 30 % are Republicans and 15 % are independent . During a recent election , 35 % of the Democrats voted , 65 % of the Republicans voted , and 75 % of the independent voted . What is the probability that someone who voted is a Democrat ?
74 )   In Cumberland County , 55 % of registered voters are Democrats , 30 % are Republicans and 15 % are independent . During a recent election , 35 % of the Democrats voted , 65 % of the Republicans voted , and 75 % of the independent voted . What is the probability that someone who voted is a Republican ?
75 )   An water well is to be drilled in the desert where the soil is either rock , clay or sand . The probability of rock P ( R ) = 0.53 . The clay probability is P ( C ) = 0.21 . The sand probability is P ( S ) 75 ) = 0.26 . It if it rock , a geological test gives a positive result with 35 % accuracy . If it is clay , this test gives a positive result with 48 % accuracy . The test gives a 75 % accuracy for sand . Given the test is positive , what is the probability that soil is rock , P( rock | positive ) ?
A ) P(rock | positive ) = 0.53
B ) P( rock | positive ) = 0.405
C ) P(rock | positive ) = 0.385
D ) P( rock | positive ) = 0.209
76 )   An water well is to be drilled in the desert where the soil is either rock , clay or sand . The probability of rock P ( R ) = 0.53 . The clay probability is P ( C ) = 0.21 . The sand probability is P ( S ) 76 ) = 0.26 . It if it rock , a geological test gives a positive result with 35 % accuracy . If it is clay , this test gives a positive result with 48 % accuracy . The test gives a 75 % accuracy for sand . Given the test is positive , what is the probability that soil is clay , P( clay | positive ) ?
77 )   An water well is to be drilled in the desert where the soil is either rock , clay or sand . The probability of rock P ( R ) = 0.53 . The clay probability is P ( C ) = 0.21 . The sand probability is P ( S ) 77 ) = 0.26 . It if it rock , a geological test gives a positive result with 35 % accuracy . If it is clay , this test gives a positive result with 48 % accuracy . The test gives a 75 % accuracy for sand . Given the test is positive , what is the probability that soil is rock , P( sand | positive ) ?
##### We have textbook solutions for you!
The document you are viewing contains questions related to this textbook. The document you are viewing contains questions related to this textbook.
Chapter 6 / Exercise 6.121
Statistics for Management and Economics + XLSTAT Bind-in
Keller Expert Verified
70)Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defectiveitems, and store B has 66% of the sales, 1% of which are of defective items. The difference indefective rates is due to different levels of pre-sale checking of the product. A person receivesa defective item of this product as a gift. What is the probability it came from store B?70)A)0.5667B)0.7083C)0.275D)0.22Answer:C
71)The incidence of a certain disease on the island of Tukow is 4%. A new test has been developedto diagnose the disease. Using this test, 91% of those who have the disease test positive while4% of those who do not have the disease test positive (false positive). If a person tests positive,what is the probability that he or she actually has the disease?71)
13
##### We have textbook solutions for you!
The document you are viewing contains questions related to this textbook. The document you are viewing contains questions related to this textbook.
Chapter 6 / Exercise 6.121
Statistics for Management and Economics + XLSTAT Bind-in
Keller Expert Verified
72)Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20%and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8%of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annualtotal production of Quality Motors is 1,000,000 cars. A car chosen at random from the annualoutput and is found defection. What is the probability that it came from plant 2?72)
73)In Cumberland County, 55% of registered voters are Democrats, 30% are Republicans and 15%are independent. During a recent election, 35% of the Democrats voted, 65% of the Republicansvoted, and 75% of the independent voted. What is the probability that someone who voted is aDemocrat?73)
74)In Cumberland County, 55% of registered voters are Democrats, 30% are Republicans and 15%are independent. During a recent election, 35% of the Democrats voted, 65% of the Republicansvoted, and 75% of the independent voted. What is the probability that someone who voted is aRepublican?74)A)0.385B)0.065C)0.39D)0.225Answer:C
75)An water well is to be drilled in the desert where the soil is either rock, clay or sand. Theprobability of rock P(R)=0.53. The clay probability is P(C)=0.21. The sand probability is P(S)=0.26. It if it rock, a geological test gives a positive result with 35% accuracy. If it is clay, thistest gives a positive result with 48% accuracy. The test gives a 75% accuracy for sand. Giventhe test is positive, what is the probability that soil is rock, P(rock | positive)?75)
• • • 