A two sample t-test found the results of a study to be
A two sample t-test found the results of a study to be statistically significant, but the sample for the study was made up of volunteers. What sort of effect could such a sample have had on the study's findings?
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let y 1 y n be iid draws from a distribution with mean mu 10 a test of h0 mu 10 using the usual t-statistic yields a
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in a given population 50 of the likely voters are women a survey using a simple random sample of 1000 landline
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a two sample t-test found the results of a study to be statistically significant but the sample for the study was made
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in a survey of 611 males ages 18-64 395 say they have gone to the dentist in the past year construct 90 and 95
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