IT training costs IT Training n Mean SD In-house 210 $490.00 $32.00 Consultants 180 $500.00$48.00 Print Done An accounting firm is trying to decide between IT training conducted in-house and the use of third-party consultants. To get some preliminary cost data, each type of training was implemented at two of the firm's offices located in different cities. The table below shows the average annual training cost per employee at each location. Are the mean costs significantly different? Assume that the assumptions for inference are satisfied. Complete parts a through c. a) Write appropriate hypotheses. Let Hy be be the mean cost of training in-house and uy be the mean cost of training using consultants. Choose the correct answer below. O A. Ho: H1-H2 = 0; HA:H7 - H270 O B. Ho: 41 - 42 = 0; HA:- H2 > 0 Oc. Ho:My-H2 0; HA:My-H2 = 0 D. Ho: P1 - H2>0; HA: H1 - H270 b) Below is a summary of computer output for this hypothesis test. Explain what the P-value means in this context. 2-Sample t-Test of p11 - H27 0; t-Statistic = -2.38 w/303 df; P = 0.018 O A. There is about an 18 in 1000 chance that these results are incorrect and they should be accepted as true. B. If the population means for the two types of training are actually unequal, there is about an 18 in 1000 chance of seeing a difference as large as or larger than the observed difference just from natural sampling variation. C. There is about an 18 in 100 chance that these results are incorrect and they should be accepted as true. D. If the population means for the two types of training are actually equal, there is about an 18 in 1000 chance of seeing a difference as large as or larger than the observed difference just from natural sampling variation. c) State a conclusion about IT costs based on the hypotheses. Use a = 0.05. A. On average, IT training costs are significantly more expensive when performed in-house compared to outsourcing to a consultant. B. On average, IT training costs are significantly different when performed in-house compared to outsourcing to a consultant. C. On average, IT training costs are not significantly more or less expensive when performed in-house compared to outsourcing to a consultant. D. On average, IT training costs are significantly less expensive when performed in-house compared to outsourcing to a consultant