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MODULE 5: THE T-TEST (PORTAGE LEARNING
STATISTICS CNSL 503) ACTUAL QUESTIONS
AND VERIFIED ANSWERS 2025
For independent sample t-tests, ___ is calculated, then __ is calculated to estimate
standard error - correct-answer-variance and pooled variance
In a paired samples t-test, the possible hypothesis include: - correct-answer-Ho:
µD=0 (The mean of differences is zero)
Ha: µD≠0 (The mean of differences is not zero)
µD>0 (The mean of differences is greater than zero)
µD<0 (The mean of differences is less than zero)
In a paired samples t-test, the df is calculated as - correct-answer-n-1
In a paired samples t-test, calculating t follows these steps: - correct-answer-1.
Calculate difference (D)
2. Calculate x̄D
3. Calculate D-x̄D
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4. Calculate (D-x̄D)^2
5. Calculate SD, the above calculation divided by n-1, then take sqrt of that
6. Calculate t
Unlike the normal distribution, the t-distribution is sensitive to _________. -
correct-answer-sample size
If a researcher states in the alternative hypothesis that μ is greater than the
claimed value, what type of test would be performed? - correct-answer-Right-
tailed
In what type of experimental design is an assessment administered before and
after a treatment condition with the same participants? - correct-answer-
Pre/post-test design
If a researcher administers the same medication to a group of teenagers and a
group of adults, what type of design is this? - correct-answer-Independent
samples design
MODULE 5: THE T-TEST (PORTAGE LEARNING
STATISTICS CNSL 503) ACTUAL QUESTIONS
AND VERIFIED ANSWERS 2025
For independent sample t-tests, ___ is calculated, then __ is calculated to estimate
standard error - correct-answer-variance and pooled variance
In a paired samples t-test, the possible hypothesis include: - correct-answer-Ho:
µD=0 (The mean of differences is zero)
Ha: µD≠0 (The mean of differences is not zero)
µD>0 (The mean of differences is greater than zero)
µD<0 (The mean of differences is less than zero)
In a paired samples t-test, the df is calculated as - correct-answer-n-1
In a paired samples t-test, calculating t follows these steps: - correct-answer-1.
Calculate difference (D)
2. Calculate x̄D
3. Calculate D-x̄D
, 2|Page
4. Calculate (D-x̄D)^2
5. Calculate SD, the above calculation divided by n-1, then take sqrt of that
6. Calculate t
Unlike the normal distribution, the t-distribution is sensitive to _________. -
correct-answer-sample size
If a researcher states in the alternative hypothesis that μ is greater than the
claimed value, what type of test would be performed? - correct-answer-Right-
tailed
In what type of experimental design is an assessment administered before and
after a treatment condition with the same participants? - correct-answer-
Pre/post-test design
If a researcher administers the same medication to a group of teenagers and a
group of adults, what type of design is this? - correct-answer-Independent
samples design
