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# A calculate the test statistic for the observed

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Unformatted text preview: tribution. The formula for the test statistic is: != !−! ! ! We will use technology or tables to find P ­values. • For a left ­tailed test, the P ­value is the area to the left of the test statistic. • For a right ­tailed test, the P ­value is the area to the right of the test statistic. • For a two ­tailed test, the P ­value is twice the area of the tail to the right of a positive test statistic or to the left of a negative test statistic. 3 We can use the T ­distribution in this case since the normality criteria for the sampling distribution are met. A Calculate the test statistic for the observed sample mean. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY™ STUDENT HANDOUT | 4 Lesson 10.3.1 Hypothesis Tests for Population Means B Sketch the T ­distribution and identify...
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## This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.

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