Related samples t activity assignment (Statistics related)

relatedsamplestactivitynosums.docx

Home >Mathematics homework help >Statistics homework help >Related samples t activity assignment (Statistics related)

Name ____________________________________________

A researcher predicts family therapy will help underweight patients with anorexia in gaining weight. He collects the weight of 17 girls both before and after undergoing family-therapy treatment.  = .05.

Tails: one two

df: = _______

Critical value: + - _______

Null Hypothesis:

____ =_____

In words:

Alt. Hypothesis:

____ ≠_____

In words:

COMPUTE:

Subject	Before	After	D	D2
1	83.8	95.2
2	83.3	94.3
3	86	91.5
4	82.5	91.9
5	86.7	100.3
6	79.6	76.7
7	76.9	76.8
8	94.2	101.6
9	73.4	94.9
10	80.5	75.2
11	81.6	77.8
12	82.1	95.5
13	77.6	90.7
14	83.5	92.5
15	89.9	93.8
16	86	91.7
17	87.3	98
N =			D =	D2 =
			=

Reject H0

Fail to Reject H0

tobt =

which is > or < than tcrit

Interpret Result: