melexcel2

# melexcel2 - t-distribution Significance level = 0.05 Ho: =...

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A-1.)Create a 95 percent confidence interval for the mean Value variable t - Confidence Interval Estimate Confidence Level 0.95 Sample Mean 195.11 Sample SD 29.6219321 Sample size 30 Critical value 2.04522961 The 0.95 confidence interval estimate: Lower value 184.049 Upper value 206.171 1

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A-2.) Create a 90 percent confidence interval for the mean Value. t - Confidence Interval Estimate Confidence Level 0.9 Sample Mean 195.11 Sample SD 29.6219321 Sample size 30 Critical value 1.699127 The 0.9 confidence interval estimate: Lower value 185.921 Upper value 204.299 2
B-1.) Confidence Intervals for the population proportion of houses that have a fireplace. p - Confidence Interval Estimate Confidence Level 0.9 # of success in sample 8 Sample size 30 Sample Proportion 0.26666667 Critical value 1.64485363 The 0.9 confidence interval estimate: Lower value 0.13386556 Upper value 0.39946778 3

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C-1.) Hypotheses Tests for the mean Taxes Variable-First Hypotheses Test Hypothesis test for the Mean using the
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Unformatted text preview: t-distribution Significance level = 0.05 Ho: = 3500 Sample mean = 3061.6 Sample SD = 763.224087 Sample size = 30 Test statistic =-3.14614768 Two tailed test Lower critical value-2.0452 Upper critical value 2.0452 p-value 0.00380628 Lower tailed test critical value-1.699127 p-value 0.00190314 Upper tailed test critical value 1.699127 p-value 0.99809686 4 C-1.) Hypotheses Test for the mean Taxes Variable- Second Hypotheses Test Hypothesis test for the Mean using the t-distribution Significance level = 0.1 Ho: = 3200 Sample mean = 3061.6 Sample SD = 763.224087 Sample size = 30 Test statistic =-0.99321816 Two tailed test Lower critical value-1.6991 Upper critical value 1.6991 p-value 0.32881916 Lower tailed test critical value-1.31143365 p-value 0.16440958 Upper tailed test critical value 1.31143365 p-value 0.83559042 5...
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## This note was uploaded on 04/07/2008 for the course STAT 216 taught by Professor Lorenheun during the Spring '08 term at Western Michigan.

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melexcel2 - t-distribution Significance level = 0.05 Ho: =...

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