1. QUESTION 1 Please use sample data provided in the following table in order to answer questions on this assignment. Round answers to three places after the decimal point. Unless noted otherwise use 5% level of significance for tests of hypothesis. For between-group mean comparisons you should assume equal variances across groups. After you enter data into the computer verify that there was no data entry error by computing and sample mean and sample standard deviation of each variable in your worksheet. These should be identical to statistics provided in the last two rows of the data table. The sum of all Z1 values is _____. 2. a. 3396.7 30 b. 3923.7 30 3936.7 30 d. 157.46 9 c. 1 points QUESTION 2 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 equals 150 in the population. The p value for this test is: 1. a.0.5 b.- . 005 c.- . 05 d.5.0 1 points QUESTION 3 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 equals mean value of Z2 in the population. The p value for this test is: 1. 0.06 3 6.3 0.00 63 0.63 1 points QUESTION 4 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 equals mean value of Z2 in the population. The conclusion of this test is: 1. Fail to reject the null hypothesis b.- Reject the null hypothesis 1 points QUESTION 5 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 equals mean value of Z2 in the population. The critical test statistic value is: 1. 2.0 6 1.9 6 1.9 6 0.0 5 1 points QUESTION 6 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 for employees and managers is the same. The observed value of the test statistic is: 1. 0.3 1 18 0.0 5 0.7 6 1 points QUESTION 7 [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 for employees and managers is the same. The conclusion is: 1. Reject the null hypothesis Fail to reject the null hypothesis QUESTION 8 TABLE 13-2 A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices. City River City Hudson Ellsworth Price ($) 1.30 1.60 1.80 Sales 100 90 90 Prescott Rock Elm Stillwater 2.00 2.40 2.90 40 38 32 Referring to Table 13-2, denoted Price by X what is )2 for these data? 1. 1.66 2.54 0 25.6 6 QUESTION 9 The R.D. Wilson Company makes a soft drink dispensing machine that allows customers to get soft drinks from the machine in a cup with ice. When the machine is running properly, the average number of fluid ounces in the cup should be 14. Periodically the machines need to be tested to make sure that they have not gone out of adjustment. To do this, six cups are filled by the machine and a technician carefully measures the volume in each cup. In one such test, the following data were observed: 14.25 13.7 14.02 14.13 13.99 14.04 Based on these sample data, which of the following is true if the significance level is .05? 1. a.- The null hypothesis can be rejected since the sample mean is greater than 14. b.- The null can be rejected because the majority of the sample values exceed 14. c.- The null hypothesis cannot be rejected since the test statistic is approximately t = 0.29, which is not in the rejection region. d.- No conclusion can be reached about the status of the machine based on a sample size of only six cups