Assume that you have a sample of n1=7,, with the sample mean

X1=50 , and a sample standard deviation of S1=4, and you have an

independent sample of n2=12 from another population with a sample

mean of X2=35 and the sample standard deviation S2=7. Complete

parts (a) through (d).

**a.** What is the value of the pooled-variance

tSTAT test statistic for testing H0: Î¼1=Î¼2 ?

**b.** In finding the critical value tÎ±/2 , how

many degrees of freedom are there?

**c.** Using a significance level of Î±=0.1 ,what is the

critical value for a one-tail test of the hypothesis H0: Î¼1â‰¤Î¼2

â€ƒâ€ƒâ€ƒ

Upper H 1 : mu 1 greater than mu 2 question markH1:

Î¼1>Î¼2?against

H1: Î¼1>Î¼2?

against H1: Î¼1>Î¼2?

**d.**

What is your

statisticalâ€‹ decision?

Upper H 1 : mu 1 greater than mu 2 question markH1:

Î¼1>Î¼2?