Exam 17: Hypothesis Testing Related to Differences

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A z-test is a univariate hypothesis test using the standard normal distribution.

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A univariate hypothesis test using the t distribution, which is used when the standard deviation is unknown and the sample size is small, is called the z-test.

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The most popular parametric test is the ________ conducted for examining hypotheses about means.

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The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known, and the population variance is estimated from the sample.

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According to the text, the t distribution is similar to the ________ in appearance.

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The categorical independent variables used in an analysis of variance are called ________.

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________ are hypothesis testing procedures that assume the variables of interest are measured on at least an interval scale.

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The sum of squares divided by the appropriate degrees of freedom is called the ________.

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Significance of the overall effect indicates that some differences exist between some of the treatment groups.

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An F-test is commonly used for the purpose of providing inferences for making statements about the means of parent populations.

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Non-parametric tests are hypothesis testing procedures that assume the variables of interest are measured on at least an interval scale.

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The two sets of degrees of freedom in which the F distribution depends on are the degrees of freedom in the ________ and the degrees of freedom in the ________.

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Parametric tests provide inferences for making statements about the means of parent populations.

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In advertising testing, attitude toward the brand was measured for respondents of a sample before and after seeing an ad for a brand. A one-sample t-test would then be used to evaluate whether the ad had any effect on attitude toward the ad.

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According to the text, hypotheses related to differences in the population means and proportions can be tested using the t distribution.

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________ tests provide inferences for making statements about the means of parent populations.

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The t statistic is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known; the population variance is estimated from the sample.

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Procedures for examining differences between more than two means are called distribution of variance.

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A(n) ________ is commonly used for the purpose of providing inferences for making statements about the means of parent populations.

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In a short essay, discuss paired samples and list at least three examples of hypotheses that are related to paired samples.

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