A local trade union consists of plumbers and electricians. Classified according to rank: Apprentice Journeyman Master Plumbers 55 40 10 Electricians 25 40 10 A member of the union is selected at random. Given that the person selected is an electrician, the probability that he is a master is:

A local trade union consists of plumbers and electricians. Classified according to rank: Apprentice Journeyman Master Plumbers 55 40 10 Electricians 25 40 10 A member of the union is selected at random. Given that the person selected is an electrician, the probability that he is a master is:

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: A candy manufacturer sells bags of chocolate treats that are supposed to be half dark chocolate and…

A: A one sample z-test must be performed to test the claim that the proportion of dark chocolates is…

Q: A nutrition label states the calories, amount of fat, carbohydrates, and protein on a drink or food…

Q: Suppose a sack contains 18 candies. There are Grey and yellow candies in the sack packed for a…

Q: At the supermarket, a tasting kiosk invites you to taste a new flavor of biscuits. A marketing study…

A: It is required to calculate the proportion of customers who will buy the biscuits.

Q: +9 = 9 (8 + 3) + 2 - 1+(3 + 2) %3D |+6 = 6 + 4 %3D

A: To fill the blank and apply the property of addtition_+9=98+3+2=_+3+2_+6=6+4

Q: All freshmen at Roseville High School are required to play exactly one sport. The table below shows…

A: Solution

Q: Given: A = {1, 2, 3, 4, 5, 6}, B = {2, 4, 5, 6}, and C = {1, 6, 7}. Find :ANB = O {1, 2, 3, 4, 5, 6,…

A: Given A = { 1, 2, 3, 4, 5, 6} B = { 2, 4, 5, 6} C = { 1, 6, 7}

Q: At a class, 50% of the students are sophomores and 20% of the students like tennis. Thirty percent…

Q: a) List the data in a stem and leaf diagram b) Find the median c) Find the first and third quartiles

A: Note : as per policy I have calculated 3 SUBPARTS PLZ REPOST FOR REMAINING Here ascending order of…

Q: Given that P(AUB) = 0. 76 Find P(An B) P(An B) = 0.36 P(ANB) = 0.26 %3D %3D %3D O 0.24 O 0.28 O 0.35…

A: Given : P(A ∪B) = 0.76 P(A∩B¯) = only P(A) = 0.36 P(A¯∩B) = only P(B) = 0.26 Now, P(A ∪ B) = only…

Q: Simplify. A a³b¹s ab ¹0 B C 7a²bis 39% D None of the above 5a¹b15a²b-3 7a²b 49ab⁹

Q: A C Total Male 12 4 5 21 Female 2. 20 10 32 Total 14 24 15 53

A: Given data: The gender and grades of the students is tabulated. Total number of students included in…

Q: F C.

Q: Homer Simpson is interested in studying the ratio of the various colors of sprinkles on Lard Lad…

A: Introduction: Here, it is not mentioned whether the three donuts of each variety are chosen randomly…

Q: Match the given Z-score with its corresponding area.

A: Given: Z 1.18 0.75 3.15 1.23 2.82 2.17 3.04 0.96 0.08 1.65

Q: Let A = {H, T}, B = {1, 2, 3, 4, 5, 6}, and C = {red, green, blue, black}. Find the number…

A: Number of elements in set C×C×C is: nC×C×C=64.

Q: LaToya is auditioning ensemble cast members for her new production. She needs the dancers to jump as…

A: LaToya is auditioning ensemble cast members for her new production. She needs the dancers to jump as…

Q: Select an Answer 1. -5 20 -30 30 -3 11 -17 14 -4 18 -27 30 -12 18 -18 Select an Answer v 2. 1 -2 1…

A: We have to solve given problem:

Q: n(A U B) = 132, n(B) = 71, and n(AN B) = 8, what is n(A)? %3D %3D

A: We have given that n( A U B)=132 , n(B)=71 and n( A ∪ B)=8

Q: if 20% of vehicles are blue and 1/3 of blue vehicles are trucks what fraction of blue vehicles are…

A: 20% of vehicles are blue Convert 20% into fraction.

Q: A university dean is interested in determining the proportion of students who receive some financial…

Q: r =BCOS 20 %3D r=5C0S20 (r.o)

Q: at pizzas pi, 40% of the pizzas made last week had extra cheese. if 10 pizzas had extra cheese, how…

Q: b. If x = 4, 6 (25) =

A: To find the value of 625

Q: P (more than 6 will fail) =

A: If an experiment has only two outcomes, they follow binomial distribution. It has two parameters,…

Q: Let X be the set of all triangles formed from the vertices of the regular hexagon; note that there…

A: Given that:Let X be the set of all triangles formed from the vertices of the regular hexagon.To…

Q: A footwear retailer sold 12 pairs of sneakers for $45 each, 11 pairs of leather shoes for $140 each,…

Q: At a class, 80% are female and 40% of the students like swim. Of the students that like swim, 60%…

Q: find smaple coeffcient of variation 4.1,4.2,.2,4.3,4.4,4.4,4.5,4.7,4.9

Q: Classwork

Q: D A P32 B C

Q: 6. 4p2 + 7q3 if p = -3

A: Put values of p and q

Q: a. If mMY =115 and mPY=72, what is mzD? b. If mzD = 35 and mMY = 167, find mPY. c. If mPY = 81 and…

A: The given diagram is

Q: The total sales made by a salesperson was $25,000 after 3 months and $68,000 after 23 months.…

Q: %3D %3D PIS) 0s not? is goaup

A: Given that:¯S=a,b,cPS=ϕ,a,b,c,a,b,b,c,c,a,a,b,cA relation is defined by Δ:PS×PS→PS.Does Δ form a…

Q: P(6/6 of hearts)=

A: Approach to solving the question/Detailed explanation: 1. Understanding ProbabilityProbability…

Q: In 2016 the Better Business Bureau settled 84% of complaints they received in the United States.…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…

Question

A 13.3%

B 26.6%

C 39.9%

D 53.2%

A local trade union consists of plumbers and electricians. Classified according to rank:
Apprentice Journeyman
Master
Plumbers
55
40
10
Electricians
25
40
10
A member of the union is selected at random. Given that the person selected is an electrician, the probability that he is a master is:

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

In a town of 3,000 people, 600 are over 50 years of age and 400 are left-handed. It is also known that 15% of all left-handers in the town are over 50 years of age. How many people in the town are left-handed, over 50 years of age, or both?
If a coin is flipped 225 times and the number of Hs is 75. Compute the proportion of Hs. Round to three places.
Leonor's weekly sales as an online seller follow a normal distribution with a standard deviation of 973 pesos. A statistical study of her sales in the last 10 weeks has found a confidence interval for the mean weekly sales to be 4633 <<5839 pesos. Considering these, supply the values of the following: Prompts Submitted Answers X Choose a match Choose a match Choose a match Choose a match NO/~ Za Confidence Level Standard Error
13% of 45 = ____
Let a = 5% – 23j and b = 26 +3– 7k then what is a. b =? O a. 12 O b. -8 O C. -12 O d. 1 O e. 8
Carl Catcher has a batting average of .370, meaning that he makes a hit 37% of the times he is up at bat. Pete Pitcher has a batting averager of only .110. Let x be the number of times Carol comes up to bat and let y be the number of times Pete comes to bat. a. If Carl bats 7 times and Pete bats 3 times, what should ther overall batting average be? b. If a total of 50 times at bat, how many times may Pete bat in order for their combined average to be as close as possible to .300? (define 3 variables, write system and solve)
Let A = { {a, b}, c, {d, e} } and B = { c, {d, e} }. Then find %3D i. P(A) ii. P(A: B)
Solve the problem. At the Jumping Jack cookie factory, quality assurance inspectors remove broken or otherwise defective cookies from a moving conveyor belt prior to packaging. Based on past studies, the plant manager knows that the inspectors eliminate 98% of the defective cookies at a conveyor belt speed of 9 feet per minute. As the belt speed increases, the factory can produce more cookies per hour, but at the cost of lower quality of the packaged product. Inspectors collect only 60% of defective cookies at a belt speed of 18 feet per minute. QA Inspector Efficiency Inspector efficiency, % defective cookies eliminated 100 90 60 |(9.98) 50- 10 11 12 13 14 15 Belt speed, feet per minute (18,60) 16 17 18 a. Find an equation of the line through the given points. Write the equation in slope-intercept form. Round the slope and y-intercept each to 1 decimal place. b. Use the equation from part (b) to predict the efficiency of the inspectors at a belt speed of 15 feet per minute. Round to…
At school 60% of the children are girls. What percentage are boys
A sample of Reese's pieces contains the following: 30 Orange, 40 Brown, 20 Yellow. What is the proportion of orange? Round to two places.
A poll sampled 600 patrons of a local fast food restaurant. Approximately 84% of patrons preferred the new sea salt French fries over the previous recipe. The margin of error for this poll was 6%. If we wanted to reduce the margin of error to 3%, how many patrons should we survey? Select one: а. 300 рatrons b. 1200 patrons с. 2400 рatrons d. 6000 patrons
A hospital report indicates 25% of its patients had an MRI in January. If 1,060 patients were hospitalized in January, how many had an MRI?