16) A nominal scale variable is
A. Usually the result of counting something.
B. May assume negative values.
C. Cannot have more than two categories.
D. Has a meaningful zero point.
17) The ratio scale of measurement
A. Usually involves ranking.
B. Has a meaningful zero point.
C. Is usually based on counting.
D. Cannot assume negative values.
18) Which of the following statements is true regarding a sample?
A. It is a part of population.
B. It must contain at least five observations.
C. It refers to descriptive statistics
D. All of these are correct
19) Which of the following is a requirement for a two-sample test of proportions.
A. The population standard deviations are equal.
B. Both samples are at least 30.
C. nB and n(1-B) are both greater than 5.
D. Both populations are positively skewed.
20) The alternate hypothesis
A. Is accepted if the null hypothesis is rejected.
B. Tells the value of the sample mean.
C. None of these
D. Will always contain the equal sign.
21) A Type I error is
A. The correct decision
B. A value determined from the test statistic
C. Accepting the null hypothesis when it is false.
D. Rejecting the null hypothesis when it is true
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