This is the scenario Dr Val I Ditty analyzed her data from a

This is the scenario: Dr. Val I. Ditty analyzed her data from a recent study that hypthothesized that a sample of collge males drink more heavily than the general population. Her analyses produced the following results:

Df=17

t(observed) = +1.860

These are the four questions that are asked of me

1. is this hypothesis directional or non-directional?

2. Would one use a one or two-tailed test for this hypothesis?

3. What is the t-critical value for this test? (considering a .05 level of statictical significance?

4. Is dr. Ditty\'s findings statistically significant and why or why not?

Solution

1)
It is Directional
2)
One tailed, because we define alternative to collge males drink more
heavily than the general population
3)
Critical Value
The Value of |t | with n-1 = 17 d.f is 1.74
4)
We got |to| =1.86 & | t | =1.74
Make Decision
Hence Value of | to | > | t | and Here we Reject Ho
It is significant, we conclude that collge males drink more
heavily than the general population