Homework Help: statistics

Posted by virna on Saturday, November 6, 2010 at 10:40am.

suppost we wanted to test the hypothesis that control a group of cancer patients(group 1) would report higher mean pain ratings than an experimental group recieving special message treatment(group 2). Use the following information, Compute at a t-statistice for independent group;
mean group 1=78.5 s(square/1)=42.1 and n(1)=25
mean group 2=72.1 s(square2/2)=39.7 and n(2) =25

statistics - MathGuru, Sunday, November 7, 2010 at 2:30pm
Use an independent groups t-test for your two samples. n1 + n2 - 2 degrees of freedom is used for this test. Use a t-table to determine your cutoff or critical value to reject the null (you should have a significance level set for the test). If your test statistic exceeds the critical value from the table, reject the null and conclude a difference. If the test statistic does not exceed the critical value from the table, do not reject the null. You cannot conclude a difference in this case.

I hope this will give you a few hints to get started on your problem.

Answer this Question

Related Questions

statistics - Would this be 2 tailed test or a 1 tailed test? " Do dog ...
sattistics - Twenty students randomly assigned to an experimental group receive ...
Statistic - 18. Twenty students randomly assigned to an experimental group ...
Statistic - Twenty students assigned to an experimental group receive 30 in a ...
Psychology - Twenty students randomly assigned to an experimental group receive ...
Psychology - Twenty students randomly assigned to an experimental group receive ...
Statistic - Twenty students assigned to an experimental group receive 30 in a ...
psychology - In an experiment, a control group is different from an experimental...
Pyschology - can anyone help me with this. I can't think of anything or ...
Psychology - can anyone help me with this. I can't think of anything or ...

For Further Reading

First Name:
School Subject:
Answer: