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 clinicaltrials, among 4817

4817 patients treated with thedrug, 129

129 developed the adverse reaction of nausea. Construct a 90

90% confidence interval for the proportion of adverse reactions.

a)Find the best point estimate of the population proportion p . (Round to three decimal places asneeded.)

b) Identify the value of the margin of error E. (Round to three decimal places asneeded.)

c) Construct the confidence interval

d) Fill in the blank of the interpretation.

One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of .