# Question 9 0 out of 1 points imagine the average time

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Question 9 0 out of 1 points Imagine the average time to complete a 4-year bachelor degree is actually 4.7 years based on national data. You collect data on the 68 psychology students who started school during the same semester as you, finding an average time to complete at 4.3 years with a standard deviation of 0.6 years. What is your 95% confidence interval? Selected Answer: [4.23, 4.37] Answers: [4.23, 4.37] [4.55, 4.85] [3.10, 5.50] [4.15, 4.45]
Question 10 1 out of 1 points The paired-samples t test allows one to assess how performance can differ for one group of people over time. Answers:
Question 11 1 out of 1 points A 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:
population means.
Question 12 1 out of 1 points The critical cutoffs for a two-tailed, paired-samples t test with seven participants at a p level of 0.01 are: Selected Answer: –3.708 and 3.708. Answers: –3.500 and 3.500. –2.998 and 2.998. –3.143 and 3.143. –3.708 and 3.708.
Question 13 0 out of 1 points What is the standard error of the difference scores for a paired-samples t test for the following difference scores: 8, 3, 4.5, 7, 11.1, 9? Answers:
Question 14 0 out of 1 points What is the correct formula for using the sample standard deviation to estimate the population standard deviation?
Answers: Question 15 1 out of 1 points For a two-tailed t test, there is only one critical cutoff value. Answers:
Question 16 0 out of 1 points The t test is a parametric statistical test that allows one to generalize what was learned about one sample to a larger population. Answers: Selected Answer: Fals e True Fals e
Question 17 0 out of 1 points The equation for the paired-samples t test is the same as that for the single- samples t test except that the data are now difference scores. Answers:
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