The National Health Statistics Report described a study in which a sample of 300 one-year-old baby girls
Question:
The National Health Statistics Report described a study in which a sample of 300 one-year-old baby girls were
weighed.
Their mean weight was 19.8 pounds with a standard deviation of 5.7 pounds.
A pediatrician claims that the mean weight of one-year-old baby girls is greater than 19 pounds. Does the data provide convincing evidence that the pediatrician's claim is true? Use α=0.01 level of significance and the p-value method.
a.
Is the sampling distribution normal?
Explain.
b.
Write the null and alternate hypotheses. Also, identify the tail test type.
c.
Calculate the test statistic. The answer must include the calculator feature used and the specific values for each
variable for credit.
d.
What is the P-value?
e.
What should be decided about the null hypothesis? Support the answer with a valid reason.
f.
Write a complete sentence conclusion. Refer to the last part of a question from 9.4 or 9.3 homework
The Analysis Of Biological Data
ISBN: 9781319226237
3rd Edition
Authors: Michael C. Whitlock, Dolph Schluter