testing hypothesis...stats

90% of adults drink milk.
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?

Quote:

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Originally Posted by Morgan82

90% of adults drink milk.
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?

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Is the p-value significant? At the level it is, but it's not at the level .....

Do you understand the concept of significance level?