What can you conclude about a sample mean falling within the region of rejection?
a. The sample probably represents some population other than the one on which the sampling distribution was based.
b. The sample represents the population on which the sampling distribution was based.
c. Another sample needs to be collected.
d. The sample should have come from the given population.
a
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Indicate whether the statement is true or false
The bias stemming from the likelihood that those who offer to participate in certain kinds of surveys differ systematically from those who are less likely to offer is known as
a. selection factors. c. self-selection. b. volunteer bias. d. stratified selection.
Whenever non-parametrics are used instead of parametrics, and the
parametric assumptions are met, then a. power is increased b. power is reduced c. power is eliminated d. power becomes equal to .95
Answer the following statement(s) true (T) or false (F)
The square root or the sum of squares of the distribution of means is called the standard error of the mean.