Purchase Solution

Randomized Double-Blind Clinical Trials

Not what you're looking for?

Ask Custom Question

In randomized, double-blind clinical trials of a new vaccine, subjects were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the first dose, 104 of 707 subjects in the experimental group (group 1) experienced fever as a side effect. After the first dose, 60 of 610 of the subjects in the control ghroup (group 2) experienced fever as a side effect. Construct a 95% confidence interval for the difference between the two population proportions, P1 - P2. Construct a 95% confidence interval estimate.

Purchase this Solution

Solution Summary

The expert examines randomized double-blinds for clinical trails.

Solution Preview

Please see the attached document for the full solution.

An interval estimate for the difference in proportions p_1 - p_2 with confidence level 1 - omega is given by

p_1 - ...

Purchase this Solution


Free BrainMass Quizzes
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.

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.