Name and describe the kind of bias that might be present if the administration decides that instead of subjecting people to random testing they'll just
a. interview employees about possible drug abuse.
b. ask people to volunteer to be tested.
A tree farmer hires a botanist to evaluate a blight that seems to be affecting his trees. The trees are planted in horizontal rows on a hill and the blight seems to be a bigger problem near the bottom of the hill. The farmer wants to know the extent of the damage to the trees. Since the trees must be destroyed to examine them, the botanist doesn't have time to examine all the trees, so she will select a sample. Several plans for choosing the sample are proposed.
a. Randomly select three trees from each horizontal row.
b. Lay out a grid on a map of the hill. Randomly select eight squares from the grid, and check all trees in those squares.
c. Randomly pick a number from 1 to 30. Start at the tree at that position in the first row, then go to every 30th tree after that.
d. Check the ten trees closest to the parking lot where the botanist parks her car.
Question 2
A certain baseball player hits a home run in 7 of his at-bats. Consider his at-bats as independent events. Find the probability that this baseball player hits more than 42 home runs in 800 at-bats?
A) 0.0307 B) 0.07 C) 0.93 D) 0.9693
Health History Assessment Questions Pertinent to Drug Administration
Habitat reconstruction is possible based on the kinds of plants present at past sites.
A noose hanging from a “Liberty Tree” reveals this artist’s bias: The “tar-and-feathering” of a Brit
Routes of Drug Administration: Advantages and Disadvantages
Reconstructed West Front of the Altar from Pergamon (In Present-day Turkey)
Drugs and Publication Bias