Question 1099574: A medical researcher suspects that the pulse rate of drinkers is higher than the pulse rate of non-drinkers. Use the sample statistics below to test the researcher's suspicion. Use a=0.05.
n1=100 n2=100, -x1=88 -x2=85, s1=4.8 s2=5.3.
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! This is a 2 sample t-test, although the df are high enough to make z appropriate. Using t, null hypothesis that both are equal, assuming random sample and equal variances, the t value is 4.19
t=(x1 mean-x2 mean)/sqrt (s1^2/n1+(s2^2/n2)
One would reject Ho with a p-value <0.0001
|
|
|
