Imagine you are doing a Related-Samples t-test, and you are on Step Three of the hypothesis test. The sample of difference scores that you calculated is -4, +2, -3. What is the correct t-obtained?

NOTE: The answer options also show many numbers that you calculate as part of the WORK for getting the t-obtained.

VERY IMPORTANT HINT: The SS of these difference scores is 20.67.

Group of answer choices

M_D (mean of D's) = -1.67

S_D (standard deviation of D's) = 3.21

S_MD (standard error) = 1.86

t-obt = -0.90

M_D (mean of D's) = -2.00

S_D (standard deviation of D's) = 2.16

S_MD (standard error) = 1.08

t-obt = -1.85

M_D (mean of D's) = -2.20

S_D (standard deviation of D's) = 3.35

S_MD (standard error) = 1.50

t-obt = -1.47

M_D (mean of D's) = -1.17

S_D (standard deviation of D's) = 2.14

S_MD (standard error) = 0.87

t-obt = -1.34