Answer Happy

Chapter 7 Statistics
Q. 5 Use the sample data and confidence level given below
to complete parts​ (a) through​ (d). A drug is used to
help prevent blood clots in certain patients. In clinical trials,
among 4160 patients treated with the drug, 142 developed the
adverse reaction of nausea. Construct a 99​% confidence interval
for the proportion of adverse reactions.
A) Find the best point estimate of the population proportion
p.
B) Identify the value of the margin of error E.
C) Construct the confidence interval.
D) Write a statement that correctly interprets the
confidence interval.
Q. 6 A clinical trial tests a method designed to increase the
probability of conceiving a girl. In the study, 572 babies were
born, and 286 of them were girls. Use the sample data to construct
a 99​% confidence interval estimate of the percentage of girls
born. Based on the result, does the method appear to be
effective?
A) _ < P < _
B) Based on the result, does the method appear to be
effective?