A survey of students was conducted to study the relationship between the types of housing a student has and the student's mode of travel to class. The table below contains data gathered in that study. Walk Skateboard Car Total 73.46% 75.24% 62.34% House 12 31.26% 26 168 206 Suppose one student is chosen at random. What is the probability the student lives in a dorm given they walk? Apartment 44 38 121 203 Dorm 155 108 3 266 Total 211 172 292 675

We are interested in analyzing data related to college football. Use S to denote the team is in the SEC and use W to denote a team has a winning season. The probability that a team is in the SEC in the data set is 5.5%. The probability that a team has a winning season is 52.5%. The probability that a team is in the SEC and has a winning season is 3.55%. What percentage of teams are in the SEC or had a winning season? b. What percentage of people teams are in the SEC and did NOT have a winning season? Given a team had a winning season, what is the probability that they are in the SEC? а. с.

e) Which drink was the most preferred and what is the probability of preferring that drink? 2. Consider the following return rates for items purchased: Retail return rates Shoppers return items bought online at a far higher rate Online purchases Return rates by category (both online and in-store) About 30% Auto parts 21% Housewares 12.3% Apparel 10.5% Footwear 9.6% Sporting goods 9.3% Beauty 5.2% Source: WSJ a) If Sally sells 27 pairs of shoes during the month, what is the probability Sally has exactly 4 pairs of shoes returned? b) What is the probability that Sally has less than4 pairs of those shoes returned? c) Tom works at Napa and sells auto parts. Tom sold 18 auto parts last week. What is the probability that Tom gets more than 4 of those parts returned? d) What is the probability that Tom between 2 and 5 of those parts returned?

. Giving a test to a group of students, the grades and gender are summarized below. If one student was chosen at random, find the probability that the student was female or earned a B.   A B C Total Male 8 18 13 39 Female 10 4 12 26 Total 18 22 25 65

A bookstore classifies its books by reader group, type of book, and cost. What is the probability that a book selected at random is a child's book, given that it costs more than $10? $10 Fiction 120 255 Child Nonfiction 35 60 Fiction 200 110 Adult Nonfiction 75 150 O A. 315 1005 O B. 470 1005 С. 315 575 D. 470 575

In a class of students, the following data table summarizes the gender of the students and whether they have an A in the class. What is the probability that a student chosen randomly from the class is a female who has an A? Has an A Does not have an A Female Male 5 2 4 12

1. On-time arrivals, lost baggage, and customer complaints are three measures that are typically used to measure the quality of service being offered by airlines. Suppose that the following values represent the on-time arrival percentage, amount of lost baggage, and customer complaints for 10 U.S. airlines. a. Based on the data above, if you randomly choose a Delta Air Lines flight, what is the probability that this individual flight will have an on-time arrival? b. If you randomly choose 1 of the 10 airlines for a follow-up study on airline quality ratings, what is the probability that you will choose an airline with less than two mishandled baggage reports per 1,000 passengers? c. If you randomly choose 1 of the 10 airlines for a follow-up study on airline quality ratings, what is the probability that you will choose an airline with more than one customer complaint per 1,000 passengers? d.  What is the probability that a randomly selected AirTran Airways flight will not arrive on…

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?

Practice 4. Speeding tickets and car color The table below shows the number of survey subjects who have received and not received a speeding ticket in the last year, and the color of their car. Red car Not red car Total Speeding ticket 15 45 60 Find the probability that a randomly chosen person: (a) has a red car or got a speeding ticket (b) has a red car or did not get a speeding ticket (c) does not have a red car or got a speeding ticket No speeding ticket 135 470 605 Total 150 515 665

A. What is the probability of a student chosen at random liking both Hannah Montana and suite life of Zach and Cody ?