in 1974 loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory. in the study college students watched a film of automobile accidents and then we're asked about how fast were the cars going when they smash into each other? another group was asked the same question except the verb was changed to hit instead of smashed into. The smashed into group reported significantly higher estimates of speed than the hit group. Suppose a researcher repeats this study with a sample of today's college students and obtains the following results. Estimated Speed Smashed into. Hit n= 15. N= 15 M= 40.8. M= 34.0 SS= 510. SS= 414 a) do the results indicate a significantly higher estimated speed for the smashed into group? Use a one -tailed test with a =0.01 b) compute the estimate value for Cohen's d to measure the size of the effect. c) write a sentence demonstrating how the results of the hypothesis test and the measure of the effect size would appear in a research report.
in 1974 loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory. in the study college students watched a film of automobile accidents and then we're asked about how fast were the cars going when they smash into each other? another group was asked the same question except the verb was changed to hit instead of smashed into. The smashed into group reported significantly higher estimates of speed than the hit group. Suppose a researcher repeats this study with a sample of today's college students and obtains the following results.
Estimated Speed
Smashed into. Hit
n= 15. N= 15
M= 40.8. M= 34.0
SS= 510. SS= 414
a) do the results indicate a significantly higher estimated speed for the smashed into group? Use a one -tailed test with a =0.01
b) compute the estimate value for Cohen's d to measure the size of the effect.
c) write a sentence demonstrating how the results of the hypothesis test and the measure of the effect size would appear in a research report.
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