Does stress affect the recall ability of police eyewitnesses? This issue was studied in an experiment that tested eyewitness memory a week after a nonstressful interrogation of a cooperative suspect, and a stressful interrogation of an uncooperative and belligerent suspect. The numbers of details recalled a week after the incident are listed below. Use a 0.01 significance level to test the claim that stress affects the amount recalled. Nonstress: n = 46, sample mean = 53.3, s = 11.6 Stress: n = 46, sample mean = 45.3, s = 13.2 For full credit your hypothesis test must include: the claim, the null and alternate hypothesis, your test statistic and corresponding p-value, your decision, and the interpretation of your decision as it relates to the claim. It is acceptable to use technology to calculate the test statistic and the p-value here.
Does stress affect the recall ability of police eyewitnesses? This issue was studied in an experiment that tested eyewitness memory a week after a nonstressful interrogation of a cooperative suspect, and a stressful interrogation of an uncooperative and belligerent suspect. The numbers of details recalled a week after the incident are listed below. Use a 0.01 significance level to test the claim that stress affects the amount recalled.
Nonstress: n = 46, sample mean = 53.3, s = 11.6
Stress: n = 46, sample mean = 45.3, s = 13.2
For full credit your hypothesis test must include: the claim, the null and alternate hypothesis, your test statistic and corresponding p-value, your decision, and the interpretation of your decision as it relates to the claim. It is acceptable to use technology to calculate the test statistic and the p-value here.
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