In a contingency table, the sum of the observed frequencies in a given row equals the sum of the expected frequencies for the same row.
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Q. 2In general, the simple events of an experiment take on values between 0 and 1.0, inclusive.
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Q. 3In the chi-square test of independence, data are classified according to two categorical variables.
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Q. 4Invariably, Venn diagrams illustrate the intersection of two events.
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Q. 5If we use the x2 test of multinomial parameters to test for the differences among 5 proportions, the degrees of freedom are equal to:
a. 2.
b. 3.
c. 4.
d. 5.
Q. 6Different events that have no outcomes in common are mutually exclusive events.
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Q. 7Of the values for a chi-square test statistic listed below, which one is likely to lead to rejecting the null hypothesis in a goodness-of-fit test?
a. 0.78
b. 2.02
c. 1.94
d. 45.1
Q. 8A tree diagram is a listing of all simple events of an experiment.
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Q. 9In a chi-square test of multinomial parameters, suppose that the value of the test statistic is 13.08 and the number of degrees of freedom is 6 . At the 5 significance level, the null hypothesis is
a. rejected and p-value for the test is smaller than 0.05.
b. not rejected, and p-value for the test is greater than 0.05.
c. rejected, and p-value for the test is greater than 0.05.
d. not rejected, and p-value for the test is smaller than 0.05.
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