The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighed. Their mean weight was 25.8 pounds with standard deviation 5.3 pounds. A pediatrician claims that the mean weight of one-year-old boys is greater than 25 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the α=0.05 level of significance and the P-value method with the TI-84 Plus calculator.
a. state null and alternative hypothesis. what tail is the hypothesis test?
b. Compute the P-value of the test statistic.
c. Determine whether to reject H0. Use the α=0.05 level of significance.
d. State a conclusion
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