Which of the following is not one of the multiple comparison method options available to compare treatment means?
A) The Scheffe Method B) The Tukey Method
C) The Bonferroni Method D) The Einstein Method
Q. 2Name 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.
Q. 3A 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
Q. 4Which method generally produces wider confidence intervals?
A) Tukey B) Bonferroni C) ANOVA D) Scheff
Q. 5One administrator suggested walking into the break room and testing the people in there. What type of sampling would this be? Explain why this method is biased. Be sure to name the kind(s) of bias you describe and link it to the variable of interest.
What will be an ideal response?
Q. 6Transportation officials tell us that 80 of drivers wear seat belts while driving. What is the probability that between 656 and 665 drivers in a sample of 850 drivers wear seat belts?
A) 0.8925 B) 0.0179 C) 0.0896 D) 0.1075
Q. 7An alarm company reports that the number of alarms sent to their monitoring center from customers owning their system follow a Poisson distribution with = 4.6 alarms per year.
Find the probability that a randomly selected customer had more than 7 alarms reported.
A) 0.087 B) 0.905 C) 0.818 D) 0.095 E) 0.182
Q. 8Which procedure was specifically developed for pairwise comparisons when the sample sizes of the treatments are equal?
A) ANOVA B) Bonferroni C) Scheff D) Tukey
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