If one person was selected at random from the 7700 customers, find the probability that the person: (a) Bought a mug or was a regional customer. (b) Was an international customer and bought a keyring. (c) Bought a craving given that the person resides locally.
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- What is a sample space?According to Nielsen Inc., the top 20 rated TV shows for 2018, based on the share of the total available audience, are listed here. A researcher believes that viewing habits of viewers who live in the U.S. Pacific Standard Time (PST) zone are not related to the Nielsen shares. The researcher surveyed a random sample of TV viewers in the PST zone and computed a composite ranking for the top 20 TV shows. Nielsen Rank Show Network Share PST ZoneComposite Rank 1 NFL Sunday Night Football NBC 6.2 1 2 This Is Us NBC 5.4 3 3 Roseanne ABC 5 12 4 NFL Thursday Night Football (CBS + NFLN) CBS 4.5 5 5 The Big Bang Theory CBS 4.4 11 6 NFL Sunday Night Football Pre-Kickoff NBC 4.3 14 7 NFL Thursday Night Football (NBC + NFLN) NBC 4 19 8 The OT Fox 3.8 16 9 The Good Doctor ABC 3.4 7 10 Young Sheldon CBS 3.3 6 11 Grey's Anatomy ABC 3.2 13 12 Football Night in America 3 NBC 3.1 8 13 9-1-1 Fox 3 2 14 Will & Grace NBC 2.8 9 15 Empire Fox 2.6 20 16 The Voice NBC 2.5…According to Nielsen Inc., the top 20 rated TV shows for 2018, based on the share of the total available audience, are listed here. A researcher believes that viewing habits of viewers who live in the U.S. Pacific Standard Time (PST) zone are not related to the Nielsen shares. The researcher surveyed a random sample of TV viewers in the PST zone and computed a composite ranking for the top 20 TV shows. Nielsen Rank Show Network Share PST ZoneComposite Rank 1 NFL Sunday Night Football NBC 6.2 1 2 This Is Us NBC 5.4 3 3 Roseanne ABC 5 12 4 NFL Thursday Night Football (CBS + NFLN) CBS 4.5 5 5 The Big Bang Theory CBS 4.4 11 6 NFL Sunday Night Football Pre-Kickoff NBC 4.3 14 7 NFL Thursday Night Football (NBC + NFLN) NBC 4 19 8 The OT Fox 3.8 16 9 The Good Doctor ABC 3.4 7 10 Young Sheldon CBS 3.3 6 11 Grey's Anatomy ABC 3.2 13 12 Football Night in America 3 NBC 3.1 8 13 9-1-1 Fox 3 2 14 Will & Grace NBC 2.8 9 15 Empire Fox 2.6 20 16 The Voice NBC 2.5…
- According to Nielsen Inc., the top 20 rated TV shows for 2018, based on the share of the total available audience, are listed here. A researcher believes that viewing habits of viewers who live in the U.S. Pacific Standard Time (PST) zone are not related to the Nielsen shares. The researcher surveyed a random sample of TV viewers in the PST zone and computed a composite ranking for the top 20 TV shows. Nielsen Rank Show Network Share PST ZoneComposite Rank 1 NFL Sunday Night Football NBC 6.2 1 2 This Is Us NBC 5.4 3 3 Roseanne ABC 5 12 4 NFL Thursday Night Football (CBS + NFLN) CBS 4.5 5 5 The Big Bang Theory CBS 4.4 11 6 NFL Sunday Night Football Pre-Kickoff NBC 4.3 14 7 NFL Thursday Night Football (NBC + NFLN) NBC 4 19 8 The OT Fox 3.8 16 9 The Good Doctor ABC 3.4 7 10 Young Sheldon CBS 3.3 6 11 Grey's Anatomy ABC 3.2 13 12 Football Night in America 3 NBC 3.1 8 13 9-1-1 Fox 3 2 14 Will & Grace NBC 2.8 9 15 Empire Fox 2.6 20 16 The Voice NBC 2.5…If the data were collected by asking the first 111 people who entered the store, then the type of sampling is:a. clusterb. simple randomc. stratifiedd. convenienceThe National Center for Education Statistics reported that 47% of college students work to pay for tuition and living expenses. Assume that a sample of 450 college students was used in the study.
- The Monterey Bay Aquarium, founded in 1984, is situated on the beautiful coast of Monterey Bay in the historic Cannery Row district. In 1985, the aquarium began a survery program that involved randomly sampling visitors as they exit for the day. The survey includes visitor demographic information, use of social media, and opinions on their aquarium visit. In 2015, the survey included 356356 visitors over age 6565 , of which 5252 used a mobile device such as an Android phone or iPad during their visit. (b) How large a sample ?n , is needed to get the common ±3±3 percentage point margin of error? Use the 2015 sample as a pilot study to get ?∗p∗ . (Enter your answer as a whole number.)The state of California is working very hard to ensure that all elementary age students whose native language is not English become proficient in English by the sixth grade. Their progress is monitored each year using the California English Language Development test. The results for two school districts in southern California for the 2003 school year are given in the accompanying table.7 Do the data indicate a significant difference in the 2003 proportions of students who are fluent in English for the two districts? Use α = .01.“The US Centers for Disease Control and Prevention said about 72 million Americans—nearly one out of every four of the country’s 304 million residents—are considered obese. Millions more are designated as overweight.” The American trend toward obesity has prompted many physicians to offer weight-loss programs to their patients. [Source: Price, W. T. “Physicians Get into the Weight-Loss Business.” Florida Today, July 7, 2008.] A physician conducted an experimental study to compare the effectiveness of four different weight-loss programs. In the study, 64 obese adults were randomly assigned to the four programs so that each program had 16 adults. The programs lasted for six months. The weights of the subjects were measured before and after the programs, and each subject’s weight loss was computed in pounds. The following table summarizes the results of the study, giving the number of observations and the sample mean and variance of the subjects’ weight loss in each program.…
- A nutritionist working for the United States Department of Agriculture (USDA) randomly selected three cartons of eggs from all of the available cartons of standard large eggs at a neighborhood grocery store. Each egg in the randomly selected cartons had their nutritional content analyzed.The data provided here are the amounts of milligrams of cholesterol in each of the sampled eggs. 186, 188, 179, 180, 192, 186, 183, 177, 184, 178, 191, 174,189, 176, 190, 188, 196, 187, 184, 184, 192, 194, 198, 183,183, 181, 187, 190, 186, 176, 183, 185, 191, 180, 184, 182 Test the validity of the claim, at the 0.01 level of significance, that the mean amount of cholesterol in a standard large egg is under 190 mg.Researchers at Purdue University and Wichita State University found that airlines aredoing a better job of getting passengers to their destinations on time (Associated Press,April 2, 2012). AirTran Airways and Southwest Airlines were among the leaders in ontime arrivals with both having 88% of their flights arriving on time. But for the 12% offlights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed flights were late are provided in the file namedAirDelay. Data are shown for both airlines.a. Formulate the hypotheses that can be used to test for a difference between the populationmean minutes late for delayed flights by these two airlines.b. What is the sample mean number of minutes late for delayed flights for each of thesetwo airlines?c. Using a .05 level of significance, what is the p-value and what is your conclusion?Researchers at Purdue University and Wichita State University found that airlines aredoing a better job of getting passengers to their destinations on time (Associated Press,April 2, 2012). AirTran Airways and Southwest Airlines were among the leaders in ontime arrivals with both having 88% of their flights arriving on time. But for the 12% offlights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed flights were late are provided in the file namedAirDelay. Data are shown for both airlines.a. Formulate the hypotheses that can be used to test for a difference between the populationmean minutes late for delayed flights by these two airlines.b. What is the sample mean number of minutes late for delayed flights for each of thesetwo airlines?