Answer we do not have enough evidence to support the

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Unformatted text preview: Are the criteria for the approximate normality of the sampling distribution of sample means satisfied? Answer: While the sample size is less than 30, the population from which we are sampling appears normal. We will assume that the criteria are met. 4 Determine the sample mean, sample standard deviation, and sample size. Answer: ! = 599.98, ! = 0.126, ! = 8 5 Is the sample mean consistent with the alternative hypothesis? Answer: Yes. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY™ STUDENT HANDOUT | 8 Lesson 10.3.1 Hypothesis Tests for Population Means Step 3: Assess the Evidence 6 Calculate the test statistic for the observed sample mean. ! !! !"".!"!!"" Answer: ! = ! = = −0.45 !.!"# ! ! 7 Sketch the T ­distributi...
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This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.

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