Fraternal twin siblings share
a. precisely 50 percent of their genes.
b. on average about 50 percent of their genes.
c. on average about 25 percent of their genes.
d. nearly 100 percent of their genes.
b
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Chapter 5 discusses several variables that can influence the accuracy of eyewitness testimony. According to this discussion, eyewitness testimony is especially accurate when
a. someone was carrying a weapon. b. there was a long delay between the event and the eyewitness testimony. c. the misinformation is believable. d. there is no social pressure for the witness to supply information.
Which statement describes a negative correlation?
A) Increased time studying is associated with a higher GPA. B) Life expectancy increases as body weight decreases. C) Body weight tends to increase with increases in height. D) People who eat more tend to weigh more.
If the null hypothesis of an experiment is true
a. The means of each of the conditions would be essentially the same b. The variance of each of the conditions will differ from each other c. The means of the conditions will differ from each other d. The variability of the groups will correspond to the variability of the population
If in fact tetrachromats, or people with four color photopigments, exist, what can we conclude about their sex? a. All tetrachromats would be female
b. All tetrachromats would be male. c. Tetrachromats would be equally likely to be male or female. d. Tetrachromats would be slightly more likely to be female than male.