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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 conđuct the test of hypothesis at 0.01 level of significance, what is your conclusion? WEEKLY CHIP SALES Total High Medium Economy At Peak Low 27 44 At Trough Rising Falling 40 53 40 133 27 11 47 40 11 12 63 Total 133 84 69 287

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 conđuct the test of hypothesis at 0.01 level of significance, what is your conclusion? WEEKLY CHIP SALES Total High Medium Economy At Peak Low 27 44 At Trough Rising Falling 40 53 40 133 27 11 47 40 11 12 63 Total 133 84 69 287

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Q1 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 your conclusion? WEEKLY CHIP SALES Total Economy High Medium Low At Peak 27 9 8 44 At Trough 40 53 40 133 Rising 27 11 47 Falling 40 11 12 63 Total 133 84 69 287
Transcribed Image Text:Q1 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 your conclusion? WEEKLY CHIP SALES Total Economy High Medium Low At Peak 27 9 8 44 At Trough 40 53 40 133 Rising 27 11 47 Falling 40 11 12 63 Total 133 84 69 287
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