Answer to Question #284059 in Civil and Environmental Engineering for Pope

Question

Independent random samples were drawn from approximately normal populations. The sample means x1= 6.8 and x2= 4.9. the sample standard deviations were s1= 1.6 and s2= 1.3. the sample sizes were n1= 12 and n2= 10

a) find the value of the test statistic t.

b) find the number of degrees of freedom for t.

c) make an interpretation of the result. Do you reject null hypothesis at a= 0.01 level?

Answer 1

We want to find 

a) find the value of the test statistic t.

b) find the number of degrees of freedom for t.

c) make an interpretation of the result. Do you reject null hypothesis at a= 0.01 level?