Reference no: EM132422233

Assume that you have a sample of n1=8?, with the sample mean X1=44?, and a sample standard deviation of S1=7, and you have an independent sample of n2=17 from another population with a sample mean of X2=30 and the sample standard deviation S2=5. Complete parts? (a) through? (d).

a. What is the value of the? pooled-variance tSTAT test statistic for testing H0: μ1=μ2??

tSTAT= ?

?(rounded to four decimal places as? needed.)

b. In finding the critical value tα/2?, how many degrees of freedom are? there?

degrees of freedom

c. Using a significance level of α=0.005?, what is the critical value for a? one-tail test of the hypothesis H0: μ1≤ μ2 against the alternative H1: μ1>μ2?

The critical value is ? (rounded to four decimal places as? needed.)

d. What is your statistical? decision?

A. H0 because the computed tSTAT test statistic is greater than the? upper-tail critical value.

B. H0 because the computed tSTAT test statistic is less than the? upper-tail critical value.

C. H0 because the computed tSTAT test statistic is less than the? upper-tail critical value.

D. H0 because the computed tSTAT test statistic is greater than the? upper-tail critical value