data sets A and B are depwndent. fondthr critical value to test the claim, M=0. use...

data sets A and B are depwndent. fondthr critical value to test the claim, M=0. use alpha= .02.

A. 6.2. 7.4. 9.3. 6.3. 6.4
B. 3.6. 2.5. 3.4. 2.3. 3.7

Solutions

Expert Solution

Paired t test for dependent means:

Before (A)	After (B)	Diff (Af-Bef)
6.2	3.6	-2.6
7.4	2.5	-4.9
9.3	3.4	-5.9
6.3	2.3	-4
6.4	3.7	-2.7
35.6	15.5	-20.1

Mean of difference = sum of all terms / no of terms = -20.1 / 5 = -4.02

standard deviation = SD

data	data-mean	(data - mean)2
-2.6	1.42	2.0164
-4.9	-0.88	0.7744
-5.9	-1.88	3.5344
-4	0.02	0.00039999999999998
-2.7	1.32	1.7424

t stat = -6.329

t critical value for two tailed test = +/- 3.7469473

orchestra answered 2 years ago

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