Question: T e e T . Question7,86.54.T HW Score: 69.05%, 4.83 of 7 ATl Part 1 of 2 Homework R - R SRR i i Radon

T e e T . Question7,86.54.T HW Score: 69.05%, 4.83 of 7 ATl Part 1 of 2 Homework R - R SRR i i Radon is a colorless and odorless radioactive gas that can accumulate in residential homes. High levels of QueStIOn ||St |e exposure can lzad to health problems. Radon levels are measured in units of picocuries per liter (pCi/L). The recommended radon lavel is less than 4 pCi/L. A housing development has 103 residential homes. The homeowners association would like to estimate the average radon level in the development. Because it would i be too expensive to measure every home, a random sample of 31 homes was selected to be tested, and the 0 Question 1 average radon level was found to be 1.4 pCi/L. Assume from past studies the population standard deviation of radon levels in homes is 0.5 pCi/L. Complete parts a and b below. @ CQuestion 2 - a. Construct a 90% confidence interval to estimate the average radon level in the housing development. o Question 3 The 90% confidence interval to estimate the average radon level is [:| pCifL, |pCifL] . {Round to two decimal places as needed.) %2 Question 4 @ Question 5 @ Question 6 %, Question 7 Help me solve this View an example Get more help - Clear all

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