KTo see whether silicon chip sales are independent of where the XYZ country's economy is in thebusiness cycle, data have been collected on the weekly sales of ABC firm, and on whether theeconomy was rising to a cycle peak, at a cycle peak, falling to a cycle trough, or at a cycletrough. The results are given in the table below. State the null and alternative hypotheses.Calculate the appropriate test statistic and conduct the test of hypothesis at 0.01 level ofsignificance, what isyourconclusion?WEEKLY CHIP SALESTotalEconomy High MediumLowAt Peak34121057At Trough516951172Rising34141260Falling51141581Total17210889369A research company has designed three different systems to clean up oil spillages. The followingtable contains the results, measured by how much surface area (in square meters) is cleared in 1hour. The data were found by testing each method in several trials. Is there any significant

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To see whether silicon chip sales are independent of where the XYZ country's economy is in the business cycle, data have been collected on the weekly sales of ABC firm, and on whether the economy was rising to a cycle peak, at a cycle peak, falling to a cycle trough, or at a cycle trough. The results are given in the table below. State the null and alternative hypotheses. Calculate the appropriate test statistic and conduct the test of hypothesis at 0.01 level of significance, what is conclusion? your WEEKLY CHIP SALES Total Economy High Medium 34 Low At Peak 12 10 57 At Trough 51 69 51 172 14 12 60 Rising Falling Total 34 51 14 15 81 172 108 89 369

To see whether silicon chip sales are independent of where the XYZ country's economy is in the business cycle, data have been collected on the weekly sales of ABC firm, and on whether the economy was rising to a cycle peak, at a cycle peak, falling to a cycle trough, or at a cycle trough. The results are given in the table below. State the null and alternative hypotheses. Calculate the appropriate test statistic and conduct the test of hypothesis at 0.01 level of significance, what is conclusion? your WEEKLY CHIP SALES Total Economy High Medium 34 Low At Peak 12 10 57 At Trough 51 69 51 172 14 12 60 Rising Falling Total 34 51 14 15 81 172 108 89 369

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 37 women athletes at the school showed that 19 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 1% level of significance. State the null and alternate hypotheses.a) H0: p = 0.67; H1: p ≠ 0.67b) H0: p = 0.67; H1: p < 0.67 c) H0: p = 0.67; H1: p > 0.67d) H0: p < 0.67; H1: p = 0.67 (b) What sampling distribution will you use?a)The standard normal, since np > 5 and nq > 5.b)The standard normal, since np < 5 and nq < 5. c)The Student's t, since np > 5 and nq > 5.d)The Student's t, since np < 5 and nq < 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic. (Round your answer to four decimal places.) Sketch the sampling distribution and show the…
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Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 38 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance. What is the level of significance? (b) State the null and alternate hypotheses. H0: p = 0.67; H1: p > 0.67 H0: p = 0.67; H1: p ≠ 0.67 H0: p < 0.67; H1: p = 0.67 H0: p = 0.67; H1: p < 0.67 What sampling distribution will you use? The Student's t, since np < 5 and nq < 5. The standard normal, since np < 5 and nq < 5. The standard normal, since np > 5 and nq > 5. The Student's t, since np > 5 and nq > 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.)…
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