A study was performed to test eyewitness accuracy. Ten pairs of participants entered a room believing they would be participating in a gambling experiment. Each participant was given $10 in coins to play poker with. The participants were randomly seated near the door or away from the door. After 15 minutes, an actor dressed in street clothes burst into the room and stole the money from the participant near the door. The “thief” was later caught, and both participants (the victim and the witness) were asked to identify him in a line-up. Eyewitness accuracies from the participants were then compared. The ten victims reported a mean accuracy of 31.5 (SD = 21). The witnesses had a mean accuracy of 52.2 (SD = 19.5). Was there a difference? What was the effect size of eyewitness accuracy? Show the nul and alternative hypthoesis, aplhpa level 0.05 and test the null hypothtesis and draw the rejctin line, conclusion and effect size
A study was performed to test eyewitness accuracy. Ten pairs of participants entered a room believing they
would be participating in a gambling experiment. Each participant was given $10 in coins to play poker with. The
participants were randomly seated near the door or away from the door. After 15 minutes, an actor dressed in street
clothes burst into the room and stole the money from the participant near the door. The “thief” was later caught,
and both participants (the victim and the witness) were asked to identify him in a line-up. Eyewitness accuracies
from the participants were then compared. The ten victims reported a mean accuracy of 31.5 (SD = 21). The
witnesses had a mean accuracy of 52.2 (SD = 19.5). Was there a difference? What was the effect size of
eyewitness accuracy? Show the nul and alternative hypthoesis, aplhpa level 0.05 and test the null hypothtesis and draw the rejctin line, conclusion and effect size
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