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).

1.9 2.3 5.7 5.2 1.9 8.8 3.9 7.3
(a) find the mean, median, and mode. (enter your answers to 2 decimal places.)
mean
median
mode
(b) find the sample standard deviation, coefficient of variation, and range. (enter your answers to 2 decimal places.)
s
cv %
range