I am having issues with these stat problems.
Take a Test - Eliyah Atkins - Google Chrome X mathxl.com/Student/PlayerTest.aspx?testld=2191338968centerwin=yes DAT 473 A Fall 2020 Eliyah Atkins & | 10/25/20 8:47 PM Test: Exam 3 Time Remaining: 01:26:35 Submit Test This Question: 1 pt 10 of 20 (0 complete) This Test: 20 pts possible In a simple exponential smoothing model, which of the following statements is true? O A. The larger the smoothing constant, the more smoothing that takes place in the model. O B. The forecast values are determined by computing a moving average of the previous 4 data periods if we are working with quarterly data. O C. If the data contain a lot of random or irregular ups and downs, then a larger smoothing constant should be used in an attempt to model these fluctuations. O D. More smoothing of the data will take place if a smoothing constant value close to zero is used. Click to select your answer. ? Type here to search 8:47 PM 10/25/2020Take a Test - Eliyah Atkins - Google Chrome X mathxl.com/Student/PlayerTest.aspx?testld=2191338968centerwin=yes DAT 473 A Fall 2020 Eliyah Atkins & | 10/25/20 8:47 PM Test: Exam 3 Time Remaining: 01:26:31 Submit Test This Question: 1 pt 11 of 20 (0 complete) This Test: 20 pts possible The General Electric service department believes that the median time for a service call should be 30 or fewer minutes. To test this, the following random sample of service times was collected. Time 33 27 40 34 22 19 40 73 26 Given that the managers do not wish to make the assumption that the population is normally distributed, what is the test statistic for the Wilcoxon signed rank sum test? O A. W= 18.0 O B. W=43.0 O C. W= 27.0 O D. None of the above Click to select your answer. ? Type here to search 8:47 PM 10/25/2020Take a Test - Eliyah Atkins - Google Chrome X mathxl.com/Student/PlayerTest.aspx?testld=2191338968centerwin=yes DAT 473 A Fall 2020 Eliyah Atkins & | 10/25/20 8:47 PM Test: Exam 3 Time Remaining: 01:26:26 Submit Test This Question: 1 pt 12 of 20 (0 complete) This Test: 20 pts possible In the finding the critical value for the Wilcoxon signed rank test, what does "n" represent? O A. The number of positive ranks B. The number of observations in the sample O C. The number of pairs O D. The number of nonzero deviations Click to select your answer. ? Type here to search 8:47 PM 10/25/2020Take a Test - Eliyah Atkins - Google Chrome X mathxl.com/Student/PlayerTest.aspx?testld=2191338968centerwin=yes DAT 473 A Fall 2020 Eliyah Atkins & | 10/25/20 8:50 PM Test: Exam 3 Time Remaining: 01:23:50 Submit Test This Question: 1 pt 13 of 20 (0 complete) This Test: 20 pts possible When employing a small sample Mann-Whitney U test for a two-tailed test, which of the following is true? O A. Select as the test statistic the smaller of the two U values. O B. The sample sizes need to be equal. O C. The alpha level should be doubled. O D. Select either of the U values to be the test statistic. Click to select your answer. ? Type here to search 8:50 PM 10/25/2020Take a Test - Eliyah Atkins - Google Chrome X mathxl.com/Student/PlayerTest.aspx?testld=2191338968centerwin=yes DAT 473 A Fall 2020 Eliyah Atkins & | 10/25/20 8:50 PM Test: Exam 3 Time Remaining: 01:23:44 Submit Test This Question: 1 pt 14 of 20 (0 complete) This Test: 20 pts possible Assume that you are conducting a small sample Mann-Whitney U test where n, = 14 and n2 = 16 and that U, =98. Assuming that U, has been found correctly, what is the value of U2? O A. 224 O B. 126 O C. 112 O D. Insufficient information to determine U2. Click to select your answer. ? Type here to search 8:50 PM 10/25/2020
