There is a 6-point difference between two sample means. If the two samples have the same variance, which of the following values would make the mean difference easiest to see in a graph showing the two distributions?
a. s2 = 2 c. s2 = 16
b. s2 = 8 d. s2 = 64
A
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In the problem-solving model described in the text, the first step involves __________.
A. testing the solution B. building a mental representation of the problem C. executing the necessary calculations D. deciding how to solve the problem
Sir Thomas Young proposed the existence of only three color receptors. How would he explain our sensation of so many other colors?
a. He could not explain our sensation of other colors, although many years later another scientist did. b. All other colors are additive or subtractive combinations of the colors he identified. c. Our brains "learn" to sense other colors, but only after experience with the first three. d. All other colors were afterimages of the three colors he identified.
The use of more than one language is known as
a. semi-lingualism. c. lingualism. b. trilingualism. d. bilingualism.
People of all ages use online dating, though some differences are seen among different age groups. Older online daters with a median age of 38, tend to utilize __________ for dating, while younger online dates, with a median age of 29, tend to utilize _________ for dating.
a. multiple apps; multiple websites b. one app; one website c. dating apps; websites d. websites; dating apps