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Question 65 out of 5 pointsAs the sample size becomes larger, the t distributions become:
Question 75 out of 5 pointsWhen the population mean but not the population standard deviation is known, which statistic is used to compare a sample to the population?
Question 85 out of 5 pointsWhen scientists call a hypothesis test conservative, they mean that it:
Question 95 out of 5 pointsAnother name for a dependent-samples t test is the _____ t test.Selected Answer:paired-samplesAnswers:single-samplepaired-samplesindependent-samplesno-sample
Question 105 out of 5 points
Which of the following is NOT used as groups in t distribution:
Question 115 out of 5 pointsA clinical researcher was interested in determining whether her interventions were effective in minimizing depression symptoms among participants. To assess the effectiveness of the treatment program, she administered a depression inventory prior to treatment and after treatment. She hypothesized that depression scores would be lower at time 2 compared to time 1. In order to maximize the likelihood of finding significant results, the researcher's hypothesis is:
Question 125 out of 5 pointsThe standard deviation of a distribution of scores in a sample is known as _____, while the standard deviation of a distribution of means is referred to as _____.
σ
σQuestion 135 out of 5 pointsWhat is the paired-samples t test statistic for the following difference scores: –2, –19, +17, –22, –6?Selected Answer:–0.92Answers:–6.40–0.926.9615.57
Question 14
5 out of 5 pointsIf the standard deviation for a population, as estimated from a sample, is s = 10.23, then the standard error for a sample size of N = 20 is sM =
Question 150 out of 5 pointsA team of researchers conducted a single-sample t test and found that the 95% confidence interval around their sample mean includes the value of the population mean. Based on this, they should conclude that:

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