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"Radon: The Problem No One Wants to Face" is the title of an article appearing in...

"Radon: The Problem No One Wants to Face" is the title of an article appearing in Consumer Reports. Radon is a gas emitted from the ground that can collect in houses and buildings. At certain levels it can cause lung cancer. Radon concentrations are measured in picocuries per liter (pCi/L). A radon level of 4 pCi/L is considered "acceptable." Radon levels in a house vary from week to week. In one house, a sample of 8 weeks had the following readings for radon level (in pCi/L). X = { 1.9 3.0 5.7 4.4 1.9 8.3 3.9 7.4 }
a. (2 pts.) Determine the mean of the data set
b. (2 pts.) Determine the median of the data set
c. (4 pts.) Determine the standard deviation of the data set

Math   Statistics-And-Probability   
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