When making decisions about the likelihood of obtaining a sample mean by chance, statisticians use a criterion probability to determine the
a. Minimum number of scores needed to create
a representative sample
b. Probability at which a population mean is too unlikely to have occurred by chance
c. Probability at which a sample mean will be considered too unlikely to have occurred by chance
d. Minimum value of the mean needed if the sample is to be considered representative
Ans: C
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