1.Are men smarter than women at Private Universities in theUnited States? A study was conducted, randomly selecting 400 men,and 400 women from different Private Universities across the US,and asking for their GPAs. What is the population of thisstudy?
All students enrolled at Private Universities in the world
All students enrolled at Universities in the US
Female students enrolled at Private Universities in the US
All students enrolled at Private Universities in the US
unanswered
2.Match each of the example experiments to the type ofexperimental design
A study was conducted to determine if rats gain weight afterexperiencing different levels of exercise. Researchers used 25rats, for four different levels of exercise, plus a control group.Rats were randomly assigned to each group until there were fiverats per group.
Some people try to counteract the presence of alcohol withcaffeine in regards to reaction time. To test this, reaction timeswere measured when subjects were exposed to one of the two levelsof alcohol (no alcohol, or yes alcohol), and one of the threedifferent levels of caffeine ( 25 mg, 50 mg, 75mg).
It is thought that different levels of mercury exposure candecrease activeness in mice. Since some mice might not be as activedue to their genetics, the litter from which the mice came from wasused in the study as well. Each mouse was exposed to a level ofmercury independently and at random.
Select an option A. Factorial Design B. Completely RandomizedDesign c.Completely Randomized Block Design
3.Which type of bait catches the largest fish? A study wasconducted using 3 different baits (worms, corn, and plastic lures),and the average weight of the fish caught was measured. How manytreatments are there?
4.Whcih of the following are true about sample statistics?(Choose all that apply)
Are always known
Are never known
Are usually represented by Greek letters
Are calculated from an entire population
Are calculated from a portion of the population
