What conclusion is appropriate if a chi-square test produces a chi-square statistic near zero?
A) There is a good fit between the sample data and the null hypothesis.
B) There is a large discrepancy between the sample data and the null hypothesis.
C) All of the expected frequencies must also be close to zero.
D) The researcher made a mistake because chi-square can never be close to zero.
Question 2If a researcher is using a t statistic to test a null hypothesis about a population, what information is needed from the population to calculate the t statistic?
A) You must know the population mean
B) You must know the population variance or standard deviation
C) You must know the population mean and the variance or standard deviation
D) The t statistic does not require any information about the population
Question 3A researcher obtains a negative value for a chi-square statistic. What can you conclude because the value is negative?
A) The observed frequencies are consistently larger than the expected frequencies.
B) The expected frequencies are consistently larger than the observed frequencies.
C) There are large differences between the observed and expected frequencies.
D) The researcher made a mistake; the value of the chi-square cannot be negative.
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