A researcher hypothesizes that people of personality type K score higher than people of personality type R on an intelligence test
The SDifference turned out to be .9, while the mean score of type K people was 18.8 and the mean score for type R people was 21.3. What is the t score?
A) t = (18.8–21.3) / .92 = –3.09
B) t = (18.8–21.3)(.3) = 8.33
C) t = (18.8–21.3) / .9 = –2.78
D) t = (18.8–21.3) / [(2)(.9)] = –1.39
Answer: C
Ans: C) t = (18.8–21.3) / .9 = –2.78
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