Exam #3 Outline
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Homework problem
solution not covered in class from Sections 83, 91, 92 (MS Word Format)
Major concepts from the following sections covered:
71: Confidence Intervals

Find critical values

Calculate and interpret confidence intervals for
means

Understand what inputs change the width of the confidence
interval
72: Sample Size:

Use the appropriate inputs and equation to calculate
a sample size.

Understand what inputs influence the sample size
and how
81: Hypothesis Test for Means

Structure of the hypothesis test (5 elements)

Define and interpret type one and type two errors

Calculate a pvalue

Use both the test statistic/critical value and pvalue
approaches to testing

Formulate onetail (upper or lower tail) and twotail
tests.
83: Hypothesis Test for Proportions

Conduct the ztest for a proportion

Use both test statistic and pvalue
approach
91: Comparing Two Variances

Conduct the F test

Use the F distribution (calculate numerator
and denominator degrees of freedom)

Use the F tables.
92: Comparing Two Means

Calculate the pooled standard deviation,
Sp

Formulate one and twotailed hypotheses

Conduct the ttest assuming equal variances