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Business Stats ch 11

Basic Statistics for Business and Economics ch 11

QuestionAnswer
What are the five steps for two-sample tests of hypothesis of independent samples? State the null and the alternate hypothesis. Select the level of significance. Determine the test statistic. Formulate a decision rule. Make the decision regarding null hypothesis and interpret the results.
What are the five steps for two-sample tests of hypothesis for proportions? State the null and the alternate hypothesis. Select the level of significance. Determine the test statistic. Formulate a decision rule. Select a sample and make a decision.
What are the requirements or the assumptions for the Pooled t-test? The sampled populations follow the normal distribution. The sampled populations are independent. The standard deviations of the two populations are equal.
p sub c Pooled Proportion
s sub p squared Pooled Sample Variance
X bar sub 1 Mean of the first sample
X bar sub 2 Mean of the second sample
d bar Mean of the difference between dependent observations.
s sub b Standard deviation of the difference between dependent observations.
Created by: dengler
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