A quality control inspector is checking a sample of light bulbs. The table summarizes her results. If one of the light bulbs is selected at random, find the probability that the light bulb is good, given that it is a 50 or 100 watt bulb. Wattage Good Defective Total 20 71 15 86 50 99 5 104 100 57 11 68 Total 227 31 258

A quality control inspector is checking a sample of light bulbs. The table summarizes her results. If one of the light bulbs is selected at random, find the probability that the light bulb is good, given that it is a 50 or 100 watt bulb. Wattage Good Defective Total 20 71 15 86 50 99 5 104 100 57 11 68 Total 227 31 258

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...

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The following table gives the number of fatal work injuries categorized by cause from 2015 in a certain country. Cause Number of Fatalities Transportation accidents 2765 Assaults and violent acts 746 Contacts with objects and equipment 727 Falls 800 424 102 20 Exposure to harmful substances or environments Fires and explosions Other Find the probability that a randomly chosen work fatality had the following cause. Assaults and violent acts There were a total of fatal work injuries.
Part C
Use the data in the table below, which shows the employment status of individuals in a particular town by age group. Age Full-time Part-time Unemployed 0—17 27 180 360 18—25 190 198 233 26—34 317 71 26 35—49 462 183 192 50+ 356 165 258 If a person is randomly chosen from the town's population, what is the probability that the person is under 18 or employed part-time?
The table shows the distribution, by age and gender, of the 28.5 million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 18-24 age range living alone. Male Female Total Attempted Ages Ages Ages Ages Ages Ages 18-24 25-34 35-44 45-64 65-74 275 Total 0.9 2.3 2.4 0.7 1.5 1.2 1.6 3.8 3.6 4.6 1.4 1.5 4.8 6.3 5.0 2.2 9.6 3.6 BECER 13.1 15.4 28.5 The probability is (Type an integer or decimal rounded to the nearest hundredth as needed.)
Part a through c please.
A marketing company has randomly surveyed 204 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League (NFL). The results of the survey are shown to the right. Complete parts a through d. Sports Preference NBA College Degree 36 No College O Degree 58 NFL 19 91 a. What is the probability that a randomly selected survey participant prefers the NFL? (Round to four decimal places as needed.) b. What is the probability that a randomly selected survey participant has a college degree and prefers the NBA? (Round to four decimal places as needed.) c. Suppose a survey participant is randomly selected and you are told that he has a college degree. What is the probability that this man prefers the NFL? (Round to four decimal places as needed.) d. Is a survey participant's preference for the NBA independent of having a college degree? No. The two events are not…
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 15 2 9 26 Female 5 20 7 32 Total 20 22 16 58 If one student is chosen at random from those who took the test,Find the probability that the student was female GIVEN they got an 'A'.
Please help me all the problem 6. thanks
The manager of an ice cream shop decides to track the purchases of ice cream throughout the day. The data is displayed on the two-way frequency table shown. Vanilla Chocolate Total Adult 52 41 93 Child 26 105 131 Total 78 146 224 Part A: What is the probability of a customer ordering vanilla ice cream given they are an adult, or P(vanilla | adult)? Round to the nearest hundredth. [ Select] Part B: What is P(child | chocolate)? [ Select] Part C: What must be true to make the events of "the customer being a child" and "ordering chocolate ice cream" independent? [ Select ]
Use the data in the table below, which shows the employment status of individuals in a particular town by age group. Age Full-time Part-time Unemployed 0—17 25 177 372 18—25 341 194 344 26—34 460 67 27 35—49 558 179 339 50+ 475 176 362 If a person is randomly chosen from the town's population, what is the probability that the person is under 18 or employed part-time?
The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is men or heavy drinker. Round your answer to three decimal places. Sex Regular Drinker Heavy Drinker Total Man Woman Total 87 101 188 0.463 0.032 0.016 0.479 Non-drinker 35 87 122 49 11 60 3 3 6
. A sample of 200 people was asked their favorite genre of music. Below are the results. Gender Rock Pop Hip-Hop Other Male 31 20 37 12 Female 17 30 19 34 If one of those people is randomly selected, find the probability that the person is a female or their favorite genre of music is Hip-hop. Round to three decimal places as needed. If one of those people is random selected, find the probability that the person’s favorite genre of music is Pop, given that the person is a male. Round to three decimal places as needed.