08:27 . "? I o 13 selected Do Not Hire I At 0.5% significance level, does it mean that proportions from the initial study have significantly changed? Use GoodnessofFit test and X2 distribution. For part (a), round your answers in the " (0 E)2 E " column to 3 decimal places. (a) Fill in the table below. Observed Expected Frequency Frequency 0 E O E Hiring In ten tion 0 4 U) Hire Probably Hire Hire N (JO Unsure Do Not Hire Total i173? i777? 111111 f F F r T H ideas.humber.ca 08328 . '9 | IULaI | | | | I (b) State the null and alternative hypotheses, and identify which one is the claim. 0 H0: Select an answer 0 H1: Select an answer Which one is the claim? 0H0 0H1 (c) Enter the number of degrees of freedom df: For part (d), round your answer to 3 decimal places. (d) What is the critical value XET : (e) Is the null hypothesis rejected? Is the E ideas.humber.ca 08228 . 6? I (CI) vvnat IS tne CFIIICaI value XE,- : I : (e) Is the null hypothesis rejected? Is the alternative hypothesis supported? 0 Reject H0 (claim) and fail to support H1 0 Fail to reject H0 and fail to support H1 (claim) O Fail to reject H0 (claim) and support H1 0 Reject H0 and support H1 (claim) (f) Select the correct statement. O At 0.5% significance level, there is not sufficient sample evidence to support the claim that proportions from the initial study have significantly changed. O At 0.5% significance level, there is sufficient sample evidence to support the claim that proportions from the initial study have significantly changed. 8 ideas.humber.ca 08:28 26 mean that ave distribution. in the " places. O - E(O-E)2 (0 - E)2 E (0 -E)2 x2 = E E ideas.humber.ca08327 . '3 I - I E 40 pts '0 1 G) Details A study conducted in a certain period of time found that fewer than half of employers who hired new college graduates last academic year plan to definitely do so again. Suppose that the hiring intentions of the respondents were as follows: 0 39% selected Hire 0 25% selected Probably Hire 0 20% selected Hire Unsure 0 16% selected Do Not Hire Six month later, a random sample of 100 employers were asked about their hiring intentions and gave the following responses: 0 43 selected Hire 0 21 selected Probably Hire 0 23 selected Hire Unsure 0 13 selected Do Not Hire At 0.5% significance level, does it mean that proportions from the initial study have significantly changed? Use Goodness-of-Fit test and X2 distribution. MW 8 ideas.humber.ca