Radon is a coloriess and odoriess radioactive gas that can accumulate in residential homes High leveis of exposure can lead to health problems. Radon levels are measured in units of picocuries per liter (pC/L). The recommended radon Ievelless than 4 p/L A housing development has 101 residental homes The homeowners association would ike lo estimate the average radon level in the development. Because it would be too expensive to measure every home, a tandom sample of 32 homes was selected to be tested, and the average radon level was found to be 1.3 pa/L Assume from past studies the population standard deviation of radon levels in homes is 0.5 pa/L Complete parts a and b below a. Construdt a 0% confidence interval to estimate the average radon level in the housing development. The s0% conftdence interval to estimate the average radon level is paL pa/L). (Round to two decimal places as needed)

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.