Question

Does secondhand smoke increase the risk of a low weight birth? A baby is "low birth weight" if it weighs less than 5.5 pounds at birth. According to the National Center of Health Statistics, about 7.8% of all babies born in the U.S. are categorized as low birth weight. Researchers randomly select 1200 babies whose mothers had extensive exposure to secondhand smoke during pregnancy. 10.4% of the sample is categorized as low birth weight. Which of the following are the appropriate null and alternative hypotheses for this research question?
a. H 0: p = 0.078
b. H a: p ≠ 0.078
c. H0: p = 0.078
d. Ha: p > 0.078
e. H0: p = 0.104
f. Ha: p ≠ 0.104
g. H0: μ = 0.078
h. Ha: μ > 0.078

Answer 1

Answer:

H0: p = 0.078

Ha: p > 0.078

Step-by-step explanation:

The researchers want know if the proportion of low weight births for women exposed to secondhand smoke during their pregnancies is greater than 0.078.