Hypothesis Testing: Two sample Z test for proportion
Not what you're looking for?
1.To compare the effectiveness of two treatments 1 and 2 for a particular disease. Patients were separated in 2 treatment groups. A patient in group 1 received treatment 1 and patients in group 2 received treatment 2. The results are given in the table below:
Treatment 1 Treatment 2
Success 170 180
Failure 30 10
(a) To answer the following question "Do treatments 1 and 2 have different effectiveness?", which test statistic should we use?
(b) A student, to whom the problem had been submitted, replied affirmatively to the question asked. Is the answer correct?
Purchase this Solution
Solution Summary
The solution provides step by step method for the calculation of testing of hypothesis. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.
Solution Preview
Please see the attachments.
Test statistic
1. To compare the effectiveness of two treatments 1 and 2 for a particular disease. Patients were separated in 2 treatment groups. A patient in group 1 received treatment 1 and patients in group 2 received treatment 2. The results are given in the table below:
Treatment 1 Treatment 2
Success 170 180
Failure 30 10
(a) To answer the following question "Do treatments 1 and 2 have different effectiveness?" which test statistic should we use?
Answer
The Test Statistic we should use is
where
Here x1 = 170, x2 = 180, n1 = 170 + 30 = 200, n2 = 180 + 10 = 190.
p1 = ...
Purchase this Solution
Free BrainMass Quizzes
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.
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.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.