You want to find the 95% confidence interval for the mean of a distribution. What technique can
you use to find this interval?
A) search a table for z scores that occur at 47.5% above the mean, and 47.5% below the mean
B) calculate the standard deviation of the distribution and multiply by .95
C) determine the kurtosis of the distribution and compare against a table of means
D) There is no way to determine a confidence interval for the mean of a distribution.
A
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Baby Henry enters Piaget's Substage 4 of the sensorimotor period when his schemes
A) are directed toward his body. B) are repeated with variation to produce new outcomes. C) are coordinated deliberately to solve simple problems. D) represent sudden solutions rather than trial-and-error solutions.
Apart from direct contact with the environment, schemes also change
A) through organization. B) externally. C) abruptly. D) reflexively.