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Please help me with these questions below. Thank you so much for taking the time to help me. 3/ To test for any signicant difference
Please help me with these questions below. Thank you so much for taking the time to help me.
3/
To test for any signicant difference in the number of hours between breakdowns for four machines, the following data were obtained. Machine Madline Machine Madl'lle 1 2 3 4 6.7 9.0 11.2 9.9 2.9 7.6 10.3 12.3II 5.5 9.6 9.? 12.1 2.5 10.5 10.2 10.9 8.6 9.6 9.3 11.4 2.6 10.1 8.? 11.4 (a) At the c: = 0.05 level of signicance, what is the difference, if any, in the population mean times among the four machines? State the null and alternative hypotheses. 0 Ho: At least two of the population means are equal. Ha: At least two of the population means are different. 0 Ho: Not all the population means are equal. Ha:P'L=P'2=P'3=P'4 OHD:y1#y2#y3#y4 Ha:P'L=P'2=P'3=P'4 OHD:F'1=P'2=F'3=P'4 Ha: Not all the population means are equal. OHo:f'1=-\"2=f'3=f'4 Haif'Ltf'ztht Find the value of the test statistic. (Round your answer to two decimal places.) Find the pvalue. {Round your answer to three decimal places.) pvalue = State your conclusion. 0 Do not reject H0. There is not sufcient evidence to conclude that the mean time between breakdowns is not the same for the four machines. 0 Reject HG. There is sufcient evidence to conclude that the mean time between breakdowns is not the same for the four machines. 0 Reject \"0' There is not sufficient evidence to conclude that the mean time between breakdowns is not the same for the four machines. 0 Do not reject H0. There is sufcient evidence to conclude that the mean time between breakdowns is not the same for the four machines. (b) Use Fisher's LSD procedure to test for the equality of the means for machines 2 and 4. Use a 0.05 level of signicance. Find the value of LSD. (Round your answer to two decimal places.) LSD = Find the pairwise absolute difference between sample means for machines 2 and 4. |x2-x| = What conclusion can you draw after carrying out this test? 0 There is a signicant difference between the means for machines 2 and 4. 0 There is not a signicant difference between the means for machines 2 and 4. You may need to use the appropriate technology to answer this question. Suppose a company surveyed the work preferences and attitudes of 1,006 working adults spread over three generations: baby boomers, Generation X, and millennials. In one question, individuals were asked if they would leave their current job to make more money at another job. The sample data are summarized in the following table. Generation Leave Job for More Money? Baby Boomer Generation X Millennial Yes 124 153 168 No 202 184 175 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. State the null and alternative hypotheses. O Ho: Interest in leaving job for more money is mutually exclusive of the employee generation. He: Interest in leaving job for more money is not mutually exclusive of the employee generation. O Ho: Interest in leaving job for more money is not mutually exclusive of the employee generation. Ha: Interest in leaving job for more money is mutually exclusive of the employee generation. O Ho: Interest in leaving job for more money is not independent of the employee generation. He: Interest in leaving job for more money is independent of the employee generation. O Ho: Interest in leaving job for more money is independent of the employee generation. He: Interest in leaving job for more money is not independent of the employee generation. Find the value of the test statistic. (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) Using a 0.05 level of significance, what is your conclusion? Reject H. We conclude that interest in leaving a job for more money is not independent of the employee generation. O Do not reject Ho. We cannot conclude that interest in leaving a job for more money is independent of the employee generation. O Do not reject Ho. We conclude that interest in leaving a job for more money is not independent of the employee generation. O Reject H . We cannot conclude that interest in leaving a job for more money is independent of the employee generationStep by Step Solution
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