Question

please solve and highlight answers

Is this sample of 25 exam scores inconsistent with the hypothesis that the true variance IS 64 LO, O-8? Use the 5 percent level of significance in a two-called test. Show all steps. Including the hypotheses and critical values from Appendix 70 67 60 86 Click here for the Excel Data File (a) Choose the correct null and alternative hypothes a. Ho-64 vs. Hy 02 - 54 b. Mo: 0264 vs. M: 02 64 C. Ho o 264 vs. H <64 Cb Choose the correct decision rule. Reject the null hypothesis If x2 39 38 or 2 12.40 b. Reject the null hypothesis 1x2 <39.36 or x2 > 12.40 Reject the null hypothesis 1x2 > 36.42 or x2 < 13.85 (b)Choose the correct decision rule. a. Roject the null hypothesis if x2 > 39.36 or x2 < 12.40 b. Roject the null hypothesis if x2 < 39.36 or x2 > 12.40 C Reject the null hypothesis if x2 > 36.42 or x2 <13.85 (c) Calculate x2 (Round your answer to a decimal places x2 (d) Choose the correct conclusion 3. Fall to reject Ho The sample is consistent with the hypothesis that the true variance b. Reject Ho The sample is inconsistent with the hypothesis that the true variance is 64

Answer 1

- Ans: for the giren data, n=25 x = 68.8 S=8.583 s= 73.67 a) Ho : 0 2 - 64 vs Hy : 0 2 7 64 - of hon @ correct 6 22 critical values are 39.364, 12.40 Refect noll hypothesis of x² > 39.36 or x² < 12.40 - option @ correct 0 2 0-1) 5 (25-1) (#3.67) (07.1967 64 d) Strice x stat as in the critical reason, fail to refect Ho. The sample is consistent with the hypothesis that the true vale 95 64 - option @ correct, ance