Edit View History Bookmarks Window Help Safari File h G webassign.net HW 10 - TMTH 3360-2 (2094 AccessUH Bb My Grades - 2022SP-20948-TMTH3360-Applied Tech.. You may need to use the appropriate appendix table or technology to answer this question. 12. [-/7 Points] DETAILS MENDSTAT14 10.E.089. A comparison of the precisions of two machines developed for extracting juice from oranges is to be made using the following data. Machine A Machine B $2 = 2.5 ounces2 $2 = 1.4 ounces n = 31 n = 31 (a) Is there sufficient evidence to indicate that there is a difference in the precision of the two machines at the 5% level of significance? State the null and alternative hypotheses. Ho: 012 = 024 versus Ha: 012 022 Ho: 012 + 022 versus Ha: 012 = 022 Ho: 012 = 022 versus Ha: 012 > 02 State the test statistic. (Round your answer to two decimal places.) State the rejection region. (Round your answer to two decimal places.) F > State the conclusion. Ho is not rejected. There is sufficient evidence to indicate a difference in the precision of the two machines. Ho is rejected. There is sufficient evidence ference in the precision of the two machines. Ho is not rejected. There is insufficient evidence to in recision of the two machines. Ho is rejected. There is insufficient evidence to indicate a erence in the precision of the two machines. (b) Find a 95% confidence interval for the ratio of the two population variances. (Round your answers to two decimal places.) to Does this interval confirm your conclusion from part (a)? Explain. Yes, because the interval includes I includes 0, it is likely o difference in the precision of the two machines. Yes, because the interval includes 1, it is likely that there is no difference in the precision of the two machines. Yes, because the interval does not include 1, it is unlikely that there is he precision of the two machines. No, because the includes 0, it is unlikely that there is a re is a difference in the precision of the two machines. No, because the interval does not include 1, it is likely that there is no difference in the precision of the two machines. You may need to use the appropriate appendix table or technology to answer this question. 13. [-/4 Points] DETAILS MENDSTAT14 10.E.101. A dairy is in the market for a new container-filling machine and is considering two models, manufactured by company A and company B. Ruggedness, cost, and convenience are comparable in the two variance is preferred. If you obtain samples of fills for each of the two models, an F-test can be used to test for the equality of population variances. 26.319 MAY 1 9 " tv J Q N q 1 7 4 MacBook Air esc 80 F1 G F3 DII E5 F6 FB @ # $ & 2 3 4. 5 6 8 Q W E R T Y UHo is not rejected. There is insufficient evidence to support the sales representative's claim. Ho is not rejected. There is sufficient evidence to support the sales representative's claim. Ho is rejected. There is sufficient evidence to support the sales representative's claim. You may need to use the appropriate appendix table or technology to answer this question. 14. [-/5 Points] DETAILS MENDSTAT14 10.E.109. MY NOTES ASK YOU The data shown here were collected on lost-time accidents (the figures given are mean work-hours lost per month over a period of 1 year) before and after an industrial safety program was put into effect. Data were recorded for six industrial plants Plant Number 1 2 3 4 5 6 Before Program 40 66 43 70 60 28 After Program 29 56 45 65 51 29 Do the data provide sufficient evidence to indicate whether the safety program was effective in reducing lost-time accidents? Test using a = 0.01. (Use "before - Mafter = "d.) State the null and alternative hypotheses. Ho: Hd 0 Ho: Hd = 0 versus Ha: Hd # 0 . Ho: Hd # 0 versus Ha: Hd = 0 Ho: Hd = 0 versus Ha: Hd > 0 Ho: ud = 0 versus Ha: Hd State the conclusion. Ho is not rejected. There is sufficient evidence to indicate that the safety program was effective in reducing lost-time accidents. Ho is rejected. There is insufficient evidence to indicate that the safety program was effective in reducing lost-time accidents. Ho is rejected. There is sufficient evidence to indicate that the safety program was effective in reducing lost-time accidents. Ho is not rejected. There is insufficient evidence to indicate that the safety program was effective in reducing lost-time accidents. You may need to use the appropriate appendix table or technology to answer this question. 15. [-/2 Points] DETAILS MENDSTAT14 10.MC.003. The sampling distribution of the ratio of two independent sample variances selected randomly from normal populations with equal variances is: a binomial distribution W X P 26,319 MAY 1 9 astv MacBook Air DD A DII F10 G F8 F9 80 $7 F5 esc F3Safari File Edit View History Bookmarks Window Help $ 1 7 9 8 @ Mon May 9 9:38 PM .. . h G D webassign.net C + 0 AccessUH Bb My Grades - 2022SP-20948-TMTH3360-Applied Tech... HW 10 - TMTH 3360-2 (20948), section 2, Spring 202.. Course Hero Yes, because the interval includes 1, it is likely that there is no difference in the precision of the two machines. Yes, because the interval does not include 1, it is unlikely that there is a difference in the precision of the two machines. No, because the interval includes 0, it is unlikely that there ence in the precision of the two machines. No, because the interval does not include 1, it is likely that here is no difference in the precision of the two machines. You may need to use the appropriate appendix table or technology to answer this question. 13. [-/4 Points] DETAILS MENDSTAT14 10.E.101. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A dairy is in the market for a new container-filling machine and is considering two models, manufactured by company A and company B. Ruggedness, cost, and convenience are comparable in the two models, so the deciding factor is the variability of fills. The model that produces fills with the smaller ance is preferred. If you obtain samples of fills for each of the two models, an F-test can be used to test for the equality of population variances. Wishing to demonstrate that the variability of fills is less for her model than for her competitor's, a sales representative for company A acquired a sample of 30 fills from her company's model and a sample of 10 fills from her competitor's model. The sample variances were sA2 = 0.023 and SB = 0.066, respectively. Does this result provide statistical support at the 0.05 level of significance for the sales representative's claim? State the null and alternative hypotheses. HO: OA = OB versus Ha: CAL OB2 HO: OA2 + OB2 versus Ha: OA2 = OB2 HO: OA > OB State the test statistic. (Round your answer to two decimal places.) F = State the rejection region. (Round your answer to two decimal places.) F > State the conclusion. Ho is rejected. There is insufficient evidence to support the sales representative's claim. Ho is not rejected. There is insuffici ntative's claim. Ho is not rejected. There is sufficient sales representative's claim. Ho is rejected. There is s resentative's claim. You may need to use the appropriate appendix table or technology to answer this question. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 14. [-/5 Points] DETAILS MENDSTAT14 10.E. 109. The data shown here were collected on lost-time accidents (the figures given are mean work-hours lost per month over a period of 1 year) before and after an industrial safety program was put into effect. Data were recorded for six industrial plants. plant Number 1 2 3 4 5 6 Before Program 40 66 43 70 60 28 After Program 29 56 45 65 51 29 Do the data provide sufficient evidence to indicate whether the safety program was effective in reducing lost-time accidents? Test using a = 0.01. (Use "before - Mafter = "d.) State the null and alternative hypothes MAY 1 w x Pi 9 MacBook AirMon May 9 9:38 PM . . 02 2 Ho: 012 + 022 versus Ha: 012 = 022 Ho: 012 = 022 versus Ha: 012 022 State the test statistic. (Round your answer to two decimal places.) F = State the rejection region. (Round your answer to two decimal places.) F > State the conclusion. Ho is rejected. There is i nt evidence to indicate that o12 differs from oz. Ho is rejected. There is suf indicate that o12 differs from 62. Ho is not rejected. The indicate that o12 differs from oz. Ho is not rejected. There is suffic indicate that o12 differs from oz2. b) Test whether the average weight of juvenile male ring-necked pheasants exceeds that of the females by more than 300 grams. (HINT: The procedure that you use should take into account the results of the analysis in part (a). Use a = 0.05. Use #1 for the population mean of males and #2 for the population mean of females.) State the null and alternative hypotheses. Ho: (#1 - #2) = 300 versus Ha: (#1 - #2) > 300 HO: (#1 - #2) = 300 versus Ha: (#1 - H2) MAY 1 MacBook Air DO A 10 F12 80 Q F7 F8 esc F3 FA E6 O