As researchers, we usually set alpha at .05 because
What will be an ideal response?
this sets our Type I error rate at 5%
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If you had 25 participants in the control group and 25 participants in the treatment group of a control group posttest only design, how many degrees of freedom would there be?
a. 25 c. 48 b. 50 d. 23
In Australia, infants who spend full days in government-funded child-care centers
A) show a mild decrease in saliva concentrations of cortisol across the day. B) have a higher rate of secure attachment than infants informally cared for by relatives, friends, and babysitters. C) have a lower rate of secure attachment than infants informally cared for by relatives, friends, and babysitters. D) exhibit defiance and disobedience in middle childhood.
Megan lives in California. Nearly every day, the local news is dominated by reports of wildfires. Megan is most likely to _______.
A. overestimate her risk of being affected by a fire due to the availability heuristic B. overestimate her risk of being affected by a fire due to the representativeness heuristic C. underestimate her risk of being affected by a fire due to the availability heuristic D. underestimate her risk of being affected by a fire due to the representativeness heuristic
Roger prays to God to let him live so he can become a missionary like he planned to become years ago. Roger is exhibiting which reaction to impending death?
a. anger b. denial and isolation c. bargaining d. depression