According to the _________, descriptive statistics calculated on large samples provide more precise estimates of population parameters than do these same statistics calculated on small samples.
a. central limit theorem
b. confidence intervals
c. unbiased estimator of the population mean
d. sample standard deviation
Question 2
Which of the following statements is true about a random sample?
a. The mean of the sample will be the best guess of the mean of the population, no matter how large the sample is.
b. The mean of the sample will be the best guess of the mean of the population but only in very large samples.
c. The mean of the sample will provide the best guess of the mean of the population, but only if the sample is normally distributed.
d. The mean of the sample will provide the best guess of the mean of the population, but only if there are outliers in the sample.
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