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## Homework Statement

Is the ideal number of children equal to 2 or higher or lower than that? For testing that the mean response from a survey equals 2.0 for the question "What do you think is the ideal number of children to have?"

(a). Report the test statistic value and show how it was obtained from other values.

## Homework Equations

test of mu = 2.0 vs. not=2.0

N=1302, mean=2.49, stdev=0.85, SE mean:0.0236, T=20.8, P=0.00000

## The Attempt at a Solution

I know that the test statistic "Z" = (Phat - Pnot) / sqrt((Pnot*(1-Pnot)/n)

What I don't know is which numbers to use for Phat and Pnot. The examples from class are if you flip a coin 10 times, then Pnot is 1/2 because you expect to get heads half the time. And if you flip the coin 10 times and you get 7 heads, then Phat = 7/10. But I don't know how to use that to help me with this problem.