Chi-squared test, matrix, and test statistic
Not what you're looking for?
Psychological and social factors can influence the survival of patients with serious diseases. One study compared the relationship between survival of patients with coronary heart disease and pet ownership. Patients were either classified as having a pet or not and whether they survived for 1 year. Based on data attached in the table (MS Word document), is there an association between owning a pet and survival?
a. State the hypotheses for a chi-squared test in the context of this problem.
b. Calculate the expected matrix and describe what it represents.
c. Calculate the test statistic. Describe what this represents and answer the question posed.
Purchase this Solution
Solution Summary
Chi-squared test, matrix, and test statistic.
Solution Preview
a. State the hypotheses for a chi-squared test in the context of this problem.
The null hypothesis tested is:
H0: There is no ...
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.