The average response time to a bank robbery is about 9 min. A local community wants to improve on this time, so they implement advanced training seminars. They find that the new response time for a sample of 36 police officers is 8 ± 4.2 (M ± SD) min. Test whether this advanced training seminar reduced response time at a .05 level of significance.
A. This advanced training seminar significantly reduced response time, t(35) = 11.43, p < .05.
B. This advanced training seminar significantly reduced response time, t(35) = –1.43, p < .05.
C. This advanced training seminar did not reduce response time, t(35) = –1.43, p > .05.
D. There is not enough information to answer this question.
Ans: C
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