Mathematics, 17.12.2019 21:31 jadaos
80 adults, 40 women and 40 men were asked to hold an ice cube for 3 minutes and encouraged to curse if they were experiencing too much pain. the outcome (the response) is a measure of the cortisol at the conclusion of the painful experience (lower indicates higher pain tolerance) as measured by a medical expert who did not know the research question. here are the summary statistics of cortisol data:
sample size (n) mean (y) sd (s)
females 40 419 5.5
males 40 422 3.5
which of the following justifies why we can safely use the two-sample t-test in this case?
the two samples are independent and both sample sizes are larger than 30.
the two samples are independent.
the two samples are both larger than 30.
the medical expert did not know which group each participant was assigned to and was blind to the hypotheses of the study
all of the above.
Answers: 2
Mathematics, 21.06.2019 16:10
The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82
Answers: 2
Mathematics, 21.06.2019 23:30
Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10
Answers: 1
80 adults, 40 women and 40 men were asked to hold an ice cube for 3 minutes and encouraged to curse...
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