stat quiz - df 10 0 hypothesized difference t...

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Number 1 (Sample Exam) Hypothesis test for two independent proportions p1 p2 0.8 0.3939 0.5208 p (as decimal) 0.8 0.393939 0.520833 p (as fraction) 48 52 100 X 60 132 192 n 0.4061 difference 0 hypothesized difference 0.0778 std. error 5.22 z 1.78E-07 p-value (two-tailed) 0.2749 confidence interval 95.% lower 0.5372 confidence interval 95.% upper 0.1311 margin of error p c
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Number 10 WP ET t-Test: Paired Two Sample for Means 1 62 51 2 49 43 WP ET 3 70 55 Mean 64.75 57.166667 4 65 62 Variance 242.56818 154.69697 5 49 51 Observations 12 12 6 96 78 Pearson Correlation 0.9336701 7 66 62 Hyp. Mean Difference 0 8 63 49 df 11 9 69 65 t Stat 4.4066141 10 88 78 P(T<=t) two-tail 0.0010516 11 59 54 t Critical two-tail 3.1058065 12 41 38
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Number 3 Number 2 Hypothesis Test: Independent Groups (z-test) Company 1 Company 2 t-Test: Two-Sample Assuming Equal Variances 103 97 Regular Premium 94 82 Company 1 Company 2 21.45 24.6 mean 110 123 Mean 98.4 110.71428571 3.46 2.99 std. dev. 87 92 Variance 76.3 1035.9047619 50 50 n 98 175 Observations 5 7 88 Pooled Variance 652.0628571429 -3.15000 difference (Regular - Premium) 118 Hyp. Mean Variance 0 0.64671 standard error of difference
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Unformatted text preview: df 10 0 hypothesized difference t Stat-0.8235839863 P(T&lt;=t) two-tail 0.4293800828-4.87 z t Critical two-tail 1.8124611022 1.11E-06 p-value (two-tailed)-4.41753 confidence interval 95.% lower-1.88247 confidence interval 95.% upper 1.26753 margin of error Number 4 Number of Children Education 0-1 2 to 3 &gt;3 Elementary 14 37 32 High School 19 42 17 College 12 17 10 Chi-square Contingency Table Test for Independence 0-1 2 to 3 &gt;3 Total Elementary Observed 14 37 32 83 Expected 18.68 39.84 24.49 83.00 (O - E) / E 1.17 0.20 2.31 3.68 High School Observed 19 42 17 78 Expected 17.55 37.44 23.01 78.00 (O - E) / E 0.12 0.56 1.57 2.24 College Observed 12 17 10 39 Expected 8.78 18.72 11.51 39.00 (O - E) / E 1.19 0.16 0.20 1.54 Total Observed 45 96 59 200 Expected 45.00 96.00 59.00 200.00 (O - E) / E 2.48 0.92 4.07 7.46 7.46 chi-square 4 df .1133 p-value...
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This note was uploaded on 11/26/2011 for the course STATISTICS 101 taught by Professor Dean during the Spring '09 term at University of the Philippines Diliman.

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stat quiz - df 10 0 hypothesized difference t...

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