Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would report higher mean pain ratings than an experimental group receiving special massage treatments (Group 2). Use the following information. Compute a t-statistic for independent groups:
mean group 1 = 78.1 SD21 = 42.1 n1 = 25
mean group 2 = 74.1 SD22 = 39.7 n2 = 25
What are the degrees of freedom and the value of t ? Using α=0.05 for a two-tailed test, is this t statistic significant? Show your calculations (or StatCrunch output) for full credit.
Degree of freedom would be = 25+25-2 = 48
Test Statistic
t = 0.3456
P value = P(t<-0.3456)+P(t>0.3456)
= 0.7311
Since test is greater than 0.05, we failed to reject the null hypothesis
Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1)...
Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would report higher mean pain ratings than an experimental group receiving special massage treatments (Group 2). Use the following information. Compute a t-statistic for independent groups: Remember: SD2 is the variance, which is the square of the standard deviation. If you are using the formula on page 116, you will use the variance, as given. If you are using the easier, preferred method...
12. Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would report higher mean pain ratings than an experimental group receiving special massage treatments (Group 2). Use the following information. Compute a t-statistic for independent groups: Remember: SD2 is the variance, which is the square of the standard deviation. If mean group 1 = 82.1 SD21 = 42.1 n1 = 25 mean group 2 = 74.1 SD22 = 39.7 n2 = 25 What...
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