You want to know whether adults in your country think the ideal number of children is equal to 2, or higher or lower than that.

(a) Define notation and state the null and alternative hypotheses for studying this.

(b) For responses in a recent GSS to the question “What do you think is the ideal number of children to have?”

software shows results:

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Test of mu = 2.0 vs mu not = 2.0 Variable n Mean StDev SE Mean T P-value Children 1302 2.490 0.850 0.0236 20.80 0.0000

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Report the test statistic value, and show how it was obtained from other values reported in the table.

(c) Explain what the P-value represents, and interpret its value.