MORGAN STATE UNIVERSITY
GRADUATE SCHOOL OF ENGINEERING
COURSE:IEGR 535 Engineering Experimental Design
INSTRUCTOR: Dr. G. Chen
AASIGMENT:
AYMAN MALASH
DATE: 10-27-1998
PROBLEM 3-1
|
Mixing Technique |
|
Tensile |
Strength |
(lb/in2) |
Totals |
Averages |
|
1 |
3129 |
3000 |
2865 |
2890 |
11884 |
2971 |
|
2 |
3200 |
3300 |
2975 |
3150 |
12625 |
3156.25 |
|
3 |
2800 |
2900 |
2985 |
3050 |
11735 |
2933.75 |
|
4 |
2600 |
2700 |
2600 |
2765 |
10665 |
2666.25 |
|
Totals |
|
|
|
|
46909 |
2931.81 |
|
Source of variation |
Sum of squares |
D.O.F |
Mean Sq. |
F0 |
F.05,3,12 |
|
Between treatment |
489740.19 |
3 |
163246.73 |
12.73 |
3.49 |
|
Error within treatments |
153908.25 |
12 |
12825.69 |
|
|
|
Total |
643648.44 |
15 |
|
|
|
The rejection criteria: F0 > Fa , a-1, N-a is not satisfied, so we reject H0
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