A Canadian longitudinal study1 examined whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. The study included children and found that of the children had received antibiotics during the first year of life. Test to see if this provides evidence that more than of Canadian children receive antibiotics during the first year of life. Show all details of the hypothesis test, including hypotheses, the standardized test statistic, the -value, the generic conclusion using a significance level, and a conclusion in context. 1Azad MB, Bridgman SL, Becker AB, Kozyrskyj AL, "Infant antibiotic exposure and the development of childhood overweight and central adiposity," International Journal of Obesity(2014) 38, 1290-1298.
Clearly state the null and alternative hypotheses.
Calculate the test statistic and p-value.
Round your answer for the test statistic to two decimal places, and your answer for the p-value to three decimal places.
Test statistic=
p-value =
What is the conclusion?
Do not reject
Reject
H0.
Do we have evidence to conclude that more than 70% of Canadian infants receive antibiotics?
a. Yes
b. No