This is the scenario: Dr. Val I. Ditty analyzed her data from a recent study tha

Question

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?

Explanation / Answer

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

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