Purchase Solution

Test the Claim that P1 = P2

Not what you're looking for?

Ask Custom Question

Use a significance level of alpha = 0.05 to test the claim that P1 = P2. Use the given sample sizes and numbers of successes to find (a) the pooled estimate p, (b) the z test statistic, (c) the critical z-values, and (d) the P-value.
Treatment Group: n1 =280 X1 = 70
Placebo Group: n2 = 450 X2 = 90

Purchase this Solution

Solution Summary

In this solution we use a significance level of alpha = 0.05 to test the claim that P1 = P2.

Solution Preview

Since for Treatment Group, n1 = 280 and X1 = 70, then p1=x1/n1 = 70/280 = 0.25

Since for Placebo Group, n2 = 450 and X2 = 90, then p2 = x2/n2 = 90/450 = ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.