Question:6. A reclaimed uranium mining area 100 miles south of
Chernobyl has been found to emit...
Question
6. A reclaimed uranium mining area 100 miles south of
Chernobyl has been found to emit...
6. A reclaimed uranium mining area 100 miles south of
Chernobyl has been found to emit a higher mean radiation level than
other non-mining land in the county. Suppose that the radiation
level for the reclaimed land has a distribution with mean 5.0
working levels (WL) and a standard deviation of 0.5 WL. Suppose
further that 20 houses built on reclaimed land are randomly
selected and the radiation level is measured in each.
a. What is the probability that the sample mean for the 20
houses exceeds 4.7 WL?
b. What is the probability that the sample mean is less than
4.8 WL?