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

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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?
WEEKLY CHIP SALES
Total
Economy High Medium
Low
At Peak
34
12
10
57
At Trough
51
69
51
172
Rising
34
14
12
60
Falling
51
14
15
81
Total
172
108
89
369
A research company has designed three different systems to clean up oil spillages. The following
table contains the results, measured by how much surface area (in square meters) is cleared in 1
hour. The data were found by testing each method in several trials. Is there any significant
Transcribed Image Text:K 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 34 12 10 57 At Trough 51 69 51 172 Rising 34 14 12 60 Falling 51 14 15 81 Total 172 108 89 369 A research company has designed three different systems to clean up oil spillages. The following table contains the results, measured by how much surface area (in square meters) is cleared in 1 hour. The data were found by testing each method in several trials. Is there any significant
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