Homework Answers
The value of F-statistic after solving the table comes less than the value in the F distribution table at the degree of freedom calculated. Therefore, all the restaurants have the same mean rating as others.
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Pomeroy Restaurants is comparing customer satisfaction at its five restaurant locations. Pomeroy chose 10 people at...
A consultant who gives day tong seminars is looking to see if his audience members tend...
A consultant who gives day tong seminars is looking to see if his audience members tend to be more alert at some points during the seminar than at others. Before one day-long seminar, he seected 13 audience members at random. At each of five set points during the seminar, each of these 13 audience members was asked to give a rating (on a scale from 0 to 100) of her alertness at that point. Thus, each audience member gave five...
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants...
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants for food, decor, service, and the cost per person. Develop a regression model to predict the cost per person, based on a variable that represents the sum of the three ratings. The magazine has compiled the accompanying table of this summated ratings variable and the cost per person for 25 restaurants in a major city. Complete parts (a) through (c) below. Click the icon...
continued table.. Will rate, thank you in advance. A magazine publishes restaurant ratings for various locations...
continued table..
Will rate, thank you in advance.
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants for food, decor, service, and the cost per person. Develop a regression model to predict the cost per person, based on a variable that represents the sum of the three ratings. The magazine has compiled the accompanying table of this summated ratings variable and the cost per person for 25 restaurants in a major city. Complete...
A customer service department asks its customers to rate their over-the-phone service on a scale of...
A customer service department asks its customers to rate their over-the-phone service on a scale of 1-20 immediately after their service has been completed. The department then matches each customer's rating with the number of minutes the person waited on hold. The accompanying table shows the ratings and number of minutes on hold for 10 randomly selected customers. The regression line for the data is ý = 17.088 - 0.517x. Use this information to complete parts a through d. Click...
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Asserbly...
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Asserbly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of 8 workers and timing each worker on each assembly process. Half of the workers are chosen at random to use Process 1 first, and the rest use Process 2 first. For each worker and each process, the assembly time (in minutes) is...
The following table summarizes the results of a study on SAT prep courses, comparing SAT scores...
The following table summarizes the results of a study on SAT prep courses, comparing SAT scores of students in a private preparation class, a high school preparation class, and no preparation class. Use the information from the table to answer the remaining questions Number of Sum of Treatment Private prep class High school prep class No prep class Observations Sample Mean Squares (SS) 690 680 640 60 60 60 265,500.00 276,120.00 302,670.00 Using the data provided, complete the partial ANOVA...
A psychologist is interested in people's views on various crimes. She has produced videotaped re-enactments of...
A psychologist is interested in people's views on various crimes. She has produced videotaped re-enactments of four different, non-violent crimes -- Jewelry theft, credit card fraud, embezzlement, and tax evasion -- and has asked viewers to give the length of the prison sentence in months) the perpetrator should get as punishment. The psychologist is looking at differences in the perceived seriousness of the crimes and also at whether there is an influence of the viewer's self-reported political position as conservative...
A major television network is considering three potential situation comedies: Bobby's Bunch, My Ex-Husbands, and I...
A major television network is considering three potential situation comedies: Bobby's Bunch, My Ex-Husbands, and I Like Larry. A pilot ("first") episode for each has been taped. The network is trying to determine whether some shows are better liked than others and whether younger viewers (under age forty) tend to have different opinions than older viewers (age forty and above). The network randomly selected 30 people under age forty and 30 people age forty and above. It randomly divided those...
While conducting a one-way ANOVA comparing 6 treatments with 10 observations per treatment, the computed value for...
While conducting a one-way ANOVA comparing 6 treatments with 10 observations per treatment, the computed value for SS(Treatment)= 1, and SS(Error)=24. Calculate the value of F. Round off the answer to 2 decimal digits A study was conducted to determine the association between the maximum distance at which a highway sign can be read ( in feet) and the age of the driver ( in years). Fourty drivers of various ages were studied. The summary statistics for distance and age are...
Nine experts rated wo brands o coffee in a aste esing experiment. A rating on a...
Nine experts rated wo brands o coffee in a aste esing experiment. A rating on a 7-port scale extremely unpleasing. 7 = extremely pleasing is given or each o our characteristics: aste, aro ma nchness and ac dit The accompanying data table contains the ratings accumulated over all four characteristics. Complete parts (a) through (d) below. EEB Click the icon to view the data table. a. At the 0.01 level of significance, is there evidenoe of a difference in the...
A consultant who gives day tong seminars is looking to see if his audience members tend to be more alert at some points during the seminar than at others. Before one day-long seminar, he seected 13 audience members at random. At each of five set points during the seminar, each of these 13 audience members was asked to give a rating (on a scale from 0 to 100) of her alertness at that point. Thus, each audience member gave five...
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants for food, decor, service, and the cost per person. Develop a regression model to predict the cost per person, based on a variable that represents the sum of the three ratings. The magazine has compiled the accompanying table of this summated ratings variable and the cost per person for 25 restaurants in a major city. Complete parts (a) through (c) below. Click the icon...
continued table..
Will rate, thank you in advance.
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants for food, decor, service, and the cost per person. Develop a regression model to predict the cost per person, based on a variable that represents the sum of the three ratings. The magazine has compiled the accompanying table of this summated ratings variable and the cost per person for 25 restaurants in a major city. Complete...
A customer service department asks its customers to rate their over-the-phone service on a scale of 1-20 immediately after their service has been completed. The department then matches each customer's rating with the number of minutes the person waited on hold. The accompanying table shows the ratings and number of minutes on hold for 10 randomly selected customers. The regression line for the data is ý = 17.088 - 0.517x. Use this information to complete parts a through d. Click...
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Asserbly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of 8 workers and timing each worker on each assembly process. Half of the workers are chosen at random to use Process 1 first, and the rest use Process 2 first. For each worker and each process, the assembly time (in minutes) is...
The following table summarizes the results of a study on SAT prep courses, comparing SAT scores of students in a private preparation class, a high school preparation class, and no preparation class. Use the information from the table to answer the remaining questions Number of Sum of Treatment Private prep class High school prep class No prep class Observations Sample Mean Squares (SS) 690 680 640 60 60 60 265,500.00 276,120.00 302,670.00 Using the data provided, complete the partial ANOVA...
A psychologist is interested in people's views on various crimes. She has produced videotaped re-enactments of four different, non-violent crimes -- Jewelry theft, credit card fraud, embezzlement, and tax evasion -- and has asked viewers to give the length of the prison sentence in months) the perpetrator should get as punishment. The psychologist is looking at differences in the perceived seriousness of the crimes and also at whether there is an influence of the viewer's self-reported political position as conservative...
A major television network is considering three potential situation comedies: Bobby's Bunch, My Ex-Husbands, and I Like Larry. A pilot ("first") episode for each has been taped. The network is trying to determine whether some shows are better liked than others and whether younger viewers (under age forty) tend to have different opinions than older viewers (age forty and above). The network randomly selected 30 people under age forty and 30 people age forty and above. It randomly divided those...
Nine experts rated wo brands o coffee in a aste esing experiment. A rating on a 7-port scale extremely unpleasing. 7 = extremely pleasing is given or each o our characteristics: aste, aro ma nchness and ac dit The accompanying data table contains the ratings accumulated over all four characteristics. Complete parts (a) through (d) below. EEB Click the icon to view the data table. a. At the 0.01 level of significance, is there evidenoe of a difference in the...
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