Big babies: The National Health Statistics Reports described a study in which a sample of

340

one-year-old baby boys were weighed. Their mean weight was

24.6

pounds with standard deviation

5.3

pounds. A pediatrician claims that the mean weight of one-year-old boys is less than

25

pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the

=0.10

level of significance and the

P

-value method with the TI-84 Plus calculator.

Part: 0 / 5

0 of 5 Parts Complete

Part 1 of 5

(a) State the appropriate null and alternate hypotheses.

H0

:

H1

:

This hypothesis test is a (Choose one) test