Greek letter representing population proportion

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1 .A human resource manager is interested in whether absences occur during the week with equal frequency. The manager took a random sample of 100 absences and created the following table:

Monday 28

Tuesday 20

Wednesday 12

Thursday 18

Friday 22

At a significance level of alpha = .05 test the Null that the probabilities of absences are the same for all five days.

2. H0: pi1- pi2 <=.01, HA: pi1- pi2 > .01 at alpha =.05 where p1=.08, p2=.035, n1 = 200, n2 = 400. Indicate which test you are performing; show the test statistic and the critical values and mention whether one-tailed or two-tailed.

3. In an opinion survey, a random sample of 1000 adults from the U.S.A and 1000 adults from Germany were asked whether they supported the death penalty. 590 American adults and 560 German adults indicated that they supported the death penalty. The researcher wants to know if there is sufficient evidence to conclude that the proportion of adults who support the death penalty is higher in the U.S.A. than in Germany. What is the decision at a =.05 and 0.10.

Reference no: EM13800388

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