In a confidence interval for the mean difference in paired data, the interval increases in width when the sample size is increased.
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Q. 2Assume that 75 of the households in Michigan have incomes of 24,375 or below. Given this information, it is certain that the mean household income is less than 24,375.
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Q. 3The procedures for comparing two population means are based on the relationship between two sets of sample data, one sample from each population. When dependent samples are involved, the data are thought of as paired data, where the pairs of data values are compared directly to each other by using the difference in their numerical values.
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Q. 4If the mean value of a set of data is 83.5 and the median is 72.8, then the third quartile will be at least 83.5.
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Q. 5The difference between two population means, when dependent samples are used, is equivalent to the mean of the paired differences.
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Q. 6The distribution of a set of data is considered to be symmetric if the first quartile and the 25th percentile are equal.
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Q. 7In constructing a confidence interval for the mean difference in paired data, the interval increases in width when the sample size is increased.
Indicate whether the statement is true or false
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