The t score is
A) (40 – 35 ) / 7 = 0.71
B) (40 – 35 )/1.63 = 3.07
C) (40 – 35 )/72= 5/49 = 0.10
D) (40 – 35 )/1.632 = 5/2.66 = 1.88
B
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