# testing hypothesis...stats

• Mar 29th 2008, 12:26 PM
Morgan82
testing hypothesis...stats
There was a campaign across a multi-county area.
Of 750 adults, 657 of them say they drink milk.
Do these responses provide strong evidence that the 90% figure is not accurate for this region?

I figured it out that the
SD=.0109
zscore=-2.2
P=.028

I know how to figure this out, but how do I come up with a conclusion? What does this mean?
• Mar 29th 2008, 03:16 PM
mr fantastic
Quote:

Originally Posted by Morgan82
There was a campaign across a multi-county area.
Of 750 adults, 657 of them say they drink milk.
Do these responses provide strong evidence that the 90% figure is not accurate for this region?

I figured it out that the
SD=.0109
zscore=-2.2
P=.028

I know how to figure this out, but how do I come up with a conclusion? What does this mean?

Is the p-value significant? At the $\displaystyle \alpha = 0.05$ level it is, but it's not at the $\displaystyle \alpha = 0.01$ level .....

Do you understand the concept of significance level?