Question
Homework: Week 7 Chapter 7 Homework 7 Score: 0 of 1 pt 12 of 12 (11 complete) v HW Score: 9167s, 11of 12 7.3.11 Listed below are measured amounts of kad on micrograms per cubic meter wgim' in the at The EPA has established an air qualey standart forlead 1s ug/m The measurements shown below were recorded at a buldrg on ditlurent drys use the given values ta constnuct a 95 i confidence itharvsl mimate the mean amount of lead in the air. 5 there anything about this data set suggesting that the cont dence atorval night not be very good? 5.40 1 30 0.340 B10 79 D normal ion table. mfidence interval for the population mean p? What is the co hree decimal plac
Explanation / Answer
Here mean=1.59 and sd=1.89
tvalue is 2.571
E=t*sd/sqrt(n)=1.98
So CI=mean+/-E=(-0.39,3.87)
