Suppose you are representing the employees at a large corporation during contract negotiations. You have a list of the salaries of all the employees at the corporation. The company has many lower level employees and only a few high paid management employees. There is a complicated system of raises that makes it so that there are many different salaries for the lower level employees. a. Which measure of center would you use to represent the employees? You are trying to support the claim that the lower level employees are not making enough money so you want to compare the average salary for this company with the national average. mode mean median b. Why is this the better choice? Explain why you chose your answer and why the other two measures of center are not as appropriate.

Rita has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Rita has recorded the travel times for samples of twelve trips via the 10 Freeway and twelve trips via the 60 Freeway. The following table gives the travel times (in minutes) for the twenty-four trips.   Travel times in minutes 10 Freeway 66, 70, 73, 71, 72, 71, 65, 74, 69, 71, 75, 71 60 Freeway 77, 72, 71, 68, 74, 80, 70, 78, 76, 71, 68, 67 Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.01 level of significance, that the mean travel time via the 10 freeway, μ1, is different from μ2, the mean travel time via the 60 freeway? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and…

Each person in a representative sample of 448 college students age 18 to 24 was classified according to age and to the response to the following question: "How often have you used a credit card to buy items knowing you wouldn't have money to pay the bill when it arrived?" Possible responses were never, rarely, sometimes, or frequently. The responses are summarized in the table. Age 18 to 20 Age 21 to 22 Age 23 to 24 Never 70 62 29 Rarely 38 34 32 Sometimes 33 42 40 Frequently 12 24 32 A USE SALT Do these data provide evidence that there is an association between age group and the response to the question? Test the relevant hypotheses using a = 0.01. State the appropriate null and alternative hypotheses. Ho: The proportions falling into each of the three age groups are the same for all four responses to the question. The proportions falling into each of the three age groups are not the same for all four responses to the question. Ho: There is an association between age group and the…

It’s been wrong twice... please help someone that’s knows what they’re doing preferably