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From Wiley Business Analytics and Statistics, 1e Please make sure that tables and formulas used are from that book :) thank you Section 8.
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From Wiley Business Analytics and Statistics, 1e
Please make sure that tables and formulas used are from that book :) thank you
Section 8.3, Exercise 3What proportion of commercial airline pilots are more than 40 years of age? Suppose a researcher has access to a list of all pilots who are members of the Commercial Airline Pilots Association. If this list is used as a frame for the study, she can randomly select a sample of pilots, contact them, and ascertain their ages. From 89 of these pilots so selected, she learns that 48 are more than 40 years of age. Construct an 85% confidence interval to estimate the population proportion of commercial airline pilots who are more than 40 years of age.
Round the answers to 3 decimal places.
[ ? ] ≤ p ≤ [ ? ]
