Because the mean of the distribution of means is equal to the mean of the population being sampled, we say that the sample mean is a(n) ______ estimator of its parameter.
a. valid
b. reliable
c. accurate
d. unbiased
Ans: D
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Which of the following presents Maslow's hierarchy of needs in the proper order??
a. ?safety ® physiological ® belonging and love ® self-actualization ® esteem b. ?physiological ® belonging and love ® safety ® esteem ® self-actualization c. ?safety ® esteem ® belonging and love ® physiological ® self-actualization d. ?physiological ® safety ® belonging and love ® esteem ® self-actualization
The blueprints for creating a person are stored and communicated in our __________
a) zygote b) genes c) gametes d) ovum
Both AIDS and genital herpes
a. can be passed along to an infant as it passes through the birth canal.
b. typically result in blindness.
c. cannot be transmitted to a fetus through the placenta.
d. can be eliminated by maternal inoculation.
Scores on achievement tests are affected more by coaching than scores on aptitude tests
Indicate whether the statement is true or false