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 42 15 13 70 At Trough 63 84 63 211 Rising 42 17 15 74 Falling 63 17 19 99 Total 211 133 110 453
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 42 15 13 70 At Trough 63 84 63 211 Rising 42 17 15 74 Falling 63 17 19 99 Total 211 133 110 453
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 8CR
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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 your conclusion? |
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| WEEKLY CHIP SALES | Total | |||||||
| Economy | High | Medium | Low | |||||
| At Peak | 42 | 15 | 13 | 70 | ||||
| At Trough | 63 | 84 | 63 | 211 | ||||
| Rising | 42 | 17 | 15 | 74 | ||||
| Falling | 63 | 17 | 19 | 99 | ||||
| Total | 211 | 133 | 110 | 453 |
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