Data Bases • Custom Term Papers • Free Term Papers • Free Research Papers • Free Essays • Free Book Reports • Plagiarism? Links • Top 100 Term Paper Sites • Top 25 Essay Sites • Top 50 Essay Sites • Search 97,000 Papers @ DirectEssays.com • Search 101,000 Papers @ ExampleEssays.com • Search 90,000 Papers @ MegaEssays.com Free Essays • Term Paper Sites • Chuck III's Free Essays • Free College Essays • TermPaperSites.com • My Term Papers • Get Free Essays • Essay World • Planet Papers	Search Lots of Essays Back to Subjects - Business probability probability Test: one-tailed z test for value of population mean Null Hypothesis: H0: population mean = 16 Alternative Hypothesis: Ha : population mean * 16 Standard Error: 9.32 / sq.rt. (33) = 1.62 Test Statistic: (9 - 16) / 1.62 = -4.32 Critical Value for z, alpha= 0.10 = 1.28 Acceptance Region from -1.28 to + infinity Test: one-tailed z test for value of population mean Null Hypothesis: H0: population mean = 1502.5 Alternative Hypothesis: Ha : population mean * 1502.5 Standard Error: 97.3 / sq.rt. (225) = 6.49 Test Statistic: (1511.4 - 1502.5) / 6.49 = 1.37 Critical Value for z, alpha= 0.05 = 1.645 Acceptance Region from negative infinity to + 1.645 Test: one-tailed t test (n * 30) for value of population mean Null Hypothesis: H0: population mean = 15 Alternative Hypothesis: Ha : population mean * 15 Standard Error: 5.4 / sq.rt. (12) = 1.56 Test Statistic: (12.3-15) / 1.56 = -1.73 Critical Value for z, alpha= 0.05 = 1.645 Acceptance Region from -1.645 to + infinity Test: one-tailed z test for value of population proportion Null Hypothesis: H0: population proportion = 0.4 Alternative Hypothesis: Ha : population proportion * 0.4 Standard Error: sq.rt. (0.4*0.6/337) = 0.027 Test Statistic: (0.395 - 0.400) / 0.027 = -0.19 Critical Value for z, alpha= 0.10 = 1.28 Acceptance Region from -1.28 to + infinity Test: one-tailed z test for difference between two population means Null Hypothesis: H0: mean1 - mean2 = 0 Alternative Hypothesis: Ha : mean1 - mean2 * 0 Standard Error: sq.rt. (7.37²/44 + 16.09²/44) = 2.78 Test Statistic: [(7.295-14.666) - 0] / 2.78 = -2.65 Critical Value for z, alpha= 0.05 = 1.645 Acceptance Region from -1.645 to + infinity Test: two-tailed z test for difference between two population proportions Null Hypothesis: H0: p1 - p2 = 0 Alternative Hypothesis: Ha : p1 - p2 not equal to 0 p1 = 35/100 = 0.35; p2 = 9/96 = 0.09 p = 44/196 = .22 Standard Error: sq.rt. (.22*.78 *(1/100 + 1/96)) = 0.059 Test Statistic: [(.35 - .09) - 0] / 0.059 = 4.41 Critical Value for z, alpha= 0.05 = 1.96 Acceptance Region from -1.96 to + 1.96 Bibliography: Word Count: 407
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