UNIT 7 PROBLEM SET 1

# UNIT 7 PROBLEM SET 1 - UNIT 7 PROBLEM SET 1 HYPOTHESIS...

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UNIT 7 PROBLEM SET 1: HYPOTHESIS TESTING AND RESEARCH COLLABORATION COURSE: MA3110

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PG.) 485 8. t-Test: Two-Sample Assuming Equal Variances Chantix Placeb o Mean 74 409 Variance 6050 313632 Observations 2 2 Pooled Variance 159841 Hypothesized Mean Difference 0 df 2 t Stat -0.8 P(T<=t) one-tail 0.2 t Critical one-tail 2.9 P(T<=t) two-tail 0.5 t Critical two-tail 4.3 10. PG.) 499 #12. t-Test: Two-Sample Assuming Unequal Variances kings 100mm Mean 12.2 8.5 Variance 160.2 45.1 Observations 2 2 Hypothesized Mean Difference 0 df 2 t Stat 0.4 P(T<=t) one-tail 0.4 t Critical one-tail 2.92
P(T<=t) two-tail 0.75 t Critical two-tail 4.3 PG.) 500 #20 t-Test: Two-Sample Assuming Unequal Variances menthol non menthol Mean 0.5 0.6 Variance 0.2 0.22 Observations 2 2 Hypothesized Mean Difference 0 df 2 t Stat -0.1 P(T<=t) one-tail 0.5 t Critical one-tail 2.9 P(T<=t) two-tail 0.95 t Critical two-tail 4.3 PG.) 512 #12 t-Test: Paired Two Sample for Means one day advance 30 days advance Mean 690.3 272.6 Variance 54272 544 Observations 7 7 Pearson Correlation -0.02 Hypothesized Mean Difference 0 df 6 t Stat 4.7 P(T<=t) one-tail

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Unformatted text preview: P(T<=t) one-tail 0.002 t Critical one-tail 3.143 P(T<=t) two-tail 0.0033 t Critical two-tail 3.71 PG.) 513 #18 a. No There is not enough evidence t-Test: Paired Two Sample for Means Reported height Measured height Mean 65.6 66.6 Variance 27.9 24.7 Observations 12 12 Pearson Correlation 0.76 Hypothesized Mean Difference df 11 t Stat-0.98 P(T<=t) one-tail 0.12 t Critical one-tail 1.8 P(T<=t) two-tail 0.35 t Critical two-tail 2.201 b. t-Test: Two-Sample Assuming Unequal Variances Reported height Measured height Mean 65.6 66.58 Variance 27.9 24.7 Observations 12 12 Hypothesized Mean Difference df 22 t Stat-0.48 P(T<=t) one-tail 0.32 t Critical one-tail 1.72 P(T<=t) two-tail 0.64 t Critical two-tail 2.074 PG.) 521 #6 F-Test Two-Sample for Variances pre post Mean 12.7 13.2 Variance 375.12 427.4 Observations 3 3 df 2 2 F 0.9 P(F<=f) one-tail 0.5 F Critical one-tail 0.05...
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