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- Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams). The first two are definitely not good for a person's health, and the last ingredient can cause addiction. Use the data in the table above to make a stem-and-leaf display for milligrams of tar per cigarette smoked. (Enter NONE in any unused answer blanks.) Are there any outliers? A. Yes, 1.0 may be an outlier. B. No, there are no outliers. C. Yes, 29.8 may be an outlier.Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). B, C, and DThe results: A. Are, or B. Are not significantly: A. High, or B. Low so there: A. is, or B. is not
- Mr. James, president of Daniel-James Financial Services, believes that there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, he gathered the following information from a sample of clients for the last month. Let X represent the number of times that the client was contacted and Y represent the valye of sales ($1000) for each client sampled. Number of Contacts (X) Sales ($1000) 14 24 12 14 20 28 16 30 23 30 b) compute the correlation coefficient and coeffcient of determination. Interpret the coefficients.Find the interquartile range for the following two data sets and compare them. Test Scores for Class A 69; 96; 82; 79; 65; 74; 83; 99; 89; 67; 90; 77; 85; 98; 66; 90; 77; 69; 80; 94 Test Scores for Class B 90; 72; 80; 92; 90; 97; 92; 75; 79; 68; 70; 82; 99; 94; 78; 73; 71; 68; 95; 100 The IQR for Class A is Number The IQR for Class B is Number Judging by their IQR, more variation is found in the test scores for Class Click for ListThe National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following data show the average number of passing yards per attempt (Yds/Att) and the percentage of games won (WinPct) for a random sample of 10 NFL teams for the 2011 season (NFL website). Team Yds/Att WinPct 5.7 26 Arizona Cardinals Atlanta Falcons Carolina Panthers 7.6 67 7.3 52 6.9 51 Chicago Bears Dallas Cowboys 5.1 17 8.6 82 New England Patriots Philadelphia Eagles Seattle Seahawks 5.3 21 6.6 41 St. Louis Rams 6.5 41 Tampa Bay Buccaneers. 6.1 38 a. Choose the correct a scatter diagram with the number of passing yards per attempt on the horizontal axis and the percentage of games won on the vertical axis. B. A. WinPct WinPct 80 DD J F1 70- 60- 50+ -40- 30 20- F2 80 F3 000 000 F4 F5 80- -70 60- 50- 40- 30- 20- S F6 ● - F7 DII F8 F9 F10 () F11 <))) F12 A
- A researcher is looking into the price of round trip airline tickets between LA and NY. The five number summary for the data sets provided below: 1. 240 2.$3753.$ 450 4. $657 5. $890 Complete the following: 1. Interpret the value of the third quartile in a contextualized sentence: Blank (answer options: 25%, 50%, at least 50, at least 25, at least 75, 75%) of _(answer iptions: airline tickets, round trip airline tockets between LA and NY, the price of an airline ticket between Ny and La) are priced_(375 or less, 657, 450, 375, 657, 450) 2. Determine if a ticker priced at 1200 would be an outlier. A ticker priced at 1200 ( answer options: would, eould not) be considered an iutlier because 1200 is (within, not within)_(the interval 93 and 939, the interval -48 and 1080, within 3 sd's of the mean, two standard deviations of the mean)An auditor for a local court system is tasked with comparing the rulings of two judges. The auditor needs to determine if Judge Hughes issues shorter sentences than Judge Wilson. The data below are the sentence lengths, in months, issued by each judge in their last twelve cases that dealt with operating a motor vehicle without a license. Test the claim that Judge Hughes issues shorter sentences than Judge Wilson for this particular type of case at the 0.05 level of significance. Let Judge Hughes' sentences be Population 1 and let Judge Wilson's sentences be Population 2. Assume that both populations are approximately normal and that the population variances are equal. Judge 24 12 12 30 36 30 12 18 24 12 24 30 Hughes Judge Wilson 36 36 24 24 24 24 18 12 30 24 18 30 Step 3 of 3: Draw a conclusion and interpret the decision. Copy DataMrs. Cunan introduced a Gallery Walk Technique in her Science class. He gave a pretest and posttest to her 20 students and gathered the following data: Student Pretest (x1) Posttest (x2) 1 10 15 2 30 35 3 15 25 4 15 25 5 20 20 6 10 20 7 18 22 8 14 20 9 15 20 10 20 15 11 18 30 12 15 10 13 15 16 14 20 25 15 18 15 16 40 45 17 10 15 18 10 10 19 12 18 20 20 25 At .05 level of significance, is the Gallery Walk Technique effective? Follow the steps in hypothesis testing. Answer the following. Problem # ________ What is the appropriate statistical test to use? _______________________________________ _____________________________________________________________________________ State Null Hypothesis: _________________________________________________________…