If H0 is true and it is not rejected, then _____ has occurred
a. a Type I error
b. a Type II error
c. either a Type I or a Type II error
d. a correct decision
D
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Explain why it is difficult for epidemiologists to get an accurate picture of the number of cases of dementia, and the types of dementia, in the U.S. population
Answer:
There are two gumball machines outside the local grocery store, one large machine and one small machine. Both machines have only yellow and orange gumballs, and each machine contains 50 percent of each color. For each coin, the large gumball machine dispenses 15 gumballs, while the small machine dispenses 5. Tim is a young genius whose interests include probability and sound decision-making. His "probability project of the day" is to get a greater percentage of either of the colors, but not an equal amount of each color. Given this, and presuming Tim has only one coin,
A. he should use his coin in the large machine. B. he should use his coin in the small machine. C. it doesn't make a difference which machine he uses. D. he should wait for other people to use the machines and see what they get.
When you first get into the swimming pool, the water feels rather cool, but after swimming for awhile, the water feels fine. A friend asks you how the water is, and you tell her the "water's great.". She jumps in and then accuses you of lying because the water is freezing. You really were not lying. It is just that you experienced
a. sensory gating. b. sensory adaptation. c. sensory conflict. d. selective attention.
Which of the following is chemically similar to amphetamine, causes brain cells to release extra amounts of serotonin, and produces a rush of energy with users saying that it makes them feel closer to others and heightens sensory experiences?
a. GHB b. Rohypnol c. LSD d. MDMA