1.value:10.00 pointsWhen only two treatments are involved, ANOVA and the Studentâ??s t test (Chapter

1.value:10.00 pointsWhen only two treatments are involved, ANOVA and the Student’s t test (Chapter 11) result in the same conclusions. Also, As an example, 14 randomly selected Introduction to History students were divided into two groups, one consisting of 6 students and the other of 8. One group took the course in the normal lecture format. The other group of 8 students took the course via the Internet. At the end of the course, each group was given a 50-item test. The following is a list of the number correct for each of the two groups.Traditional LectureInternet1335152625382326122414252725a-1.Complete the ANOVA table. (Round SS, MS and F values to 2 decimal places.)SourceSSdfMSFFactorsErrorTotala-2.Use a level of significance. (Round your answer to 2 decimal places.)The test statistic is Fb.Using the t test from Chapter 11, compute t. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)tc.There is (Click to select)is a differenceis no difference in the mean test scores.[The following information applies to the questions displayed below.]The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 24 of each type were mailed from the Network Distribution Center in Altanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow:SourceDFSSMSFPFactor312.644.213.31.024Error92116.731.27Total95129.372.value:10.00 pointsRequired informationRequirement 2:What is the decision rule? Use the 0.05 significance level. (Round your answer to 4 decimal places.)Reject H0 if F>3.value:10.00 pointsThe city of Tucson, Arizona, employs people to assess the value of homes for the purpose of establishing real estate tax. The city manager sends each assessor to the same five homes and then compares the results. The information is given below, in thousands of dollars. Can we conclude that there is a difference in the assessors? Use the 0.05 significance level.AssessorHomeZawodnyNormanCingleHolidayA$54$52$47$42B53535558C47524555D76676262E83889386a.Is there a difference in the treatment means? (Round your answer to 2 decimal places.)The computed F value is .Decision: (Click to select)There isThere is not a difference in the treatment means.b.Is there a difference in the block means? (Round your answer to 2 decimal places.)The computed F is .Decision: (Click to select)There isThere is not a difference in the block means.[The following information applies to the questions 4-5 displayed below.]Martin Motors has in stock three cars of the same make and model. The Sales Manager would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gasoline was added to an empty tank, and the car was driven until it ran out of gas. The following table shows the number of miles driven in each trial.Distance (miles)Types of GasolineCar ACar BCar CRegular22.420.821.5Super regular17.019.420.7Unleaded19.220.221.2Premium unleaded20.318.620.44.value:10.00 pointsRequired informationAt 0.05 significance level, state the decision rule for both treatments (Cars) and blocks (Gasoline). (Round your answers to 2 decimal places.)For Treatments (cars) reject H0 if F >For Blocks reject H0 if F >5.value:10.00 pointsRequired informationComplete the ANOVA table. (Round your SS, MS and F values to 2 decimal places.)SourceSSdfMSFTreatmentsBlocksErrorTotal[The following information applies to the questions 6-7 displayed below.]Three supermarket chains in the Denver area each claims to have the lowest overall prices. As part of an investigative study on supermarket advertising, theDenver Daily News conducted a study. First, a random sample of nine grocery items was selected. Next, the price of each selected item was checked at each of the three chains on the same day. At the 0.1 significance level, is there a difference in the mean prices at the supermarkets or for the items?ItemSuper$Ralph’sLowblaws1$2.32$1.25$1.2522.401.801.8732.103.103.1042.301.871.8751.211.371.3764.043.051.7274.323.522.2284.153.082.4095.054.154.216.value:10.00 pointsRequired informationa-5.What is the decision rule for both? (Round your answers to 2 decimal places.)For Stores, reject H0 if F >For Items, reject H0 if F >7.value:10.00 pointsRequired informationa-6.Complete an ANOVA table. (Round SS, MS to 3 decimal places and F to 2 decimal places.)SourceSSdfMSFStoresItemsErrorTotal8.value:10.00 pointsA senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary. The sample information is submitted to MINITAB with the following results:Analysis of VarianceSourcedfSSMSFFactor329.729.912.82Error1035.143.51Total1364.86Reject H0 if F > . (Round your answer to 2 decimal places.)At the 0.05 level of significance, is there a difference in the mean number of months before a raise was granted among the four CPA firms? (Click to select)Do not rejectReject4.value:10.00 pointsA study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercials were for clothes, food, and toys.ClothesFoodToys2033552443533534403550442847633142531734483143582057474751445154.mhhe.com/connect/0078020522/data_files/chapter12/Ex12_32_9_e16.xls”>.png” alt=”Picture”>Click here for the Excel Data File1.Complete the ANOVA table. Use .05 significance level. (Round the SS and MS values to 1 decimal place and F value to 2 decimal places. Leave no cells blank – be certain to enter “0” wherever required.)SourcedfSSMSFpFactorsErrorTotal2.Find the values of mean and standard deviation. (Round the mean and standard deviation values to 3 decimal places.)LevelNMeanStDevClothesFoodToys3.Is there a difference in the mean attention span of the children for the various commercials?The hypothesis of identical means can definitely be (Click to select)rejectednot rejected.There is (Click to select)differenceno differencein the mean attention span.4.Are there significant differences between pairs of means?Clothes have a mean attention span of at least ten minutes (Click to select)abovebelowthe other groups.

 

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