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5. The times in hours necessary to cut the holes in Problem 4.6 were recorded as follows: Position Strip I. 5 E(2.4) D(2.7) 1
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Answer #1

ANSWER

Minitab used

Stat------ANOVA -- General Linear Model----Fit General Linear Model

To test the effect of strip, calculated F= 1.16, P=0.377 which is > 0.05 level of significance. Strip has no significant effect on time.

To test the effect of position, calculated F= 2.10, P=0.143 which is > 0.05 level of significance. position has no significant effect on time.

To test the effect of electrode, calculated F= 15.83, P=0.000 which is < 0.05 level of significance. electrode has a significant effect on time.

Minitab output:

General Linear Model: time versus strip, position, electrode

Method

Factor coding

(-1, 0, +1)

Factor Information

Factor

Type

Levels

Values

strip

Fixed

5

1, 2, 3, 4, 5

position

Fixed

5

1, 2, 3, 4, 5

electrode

Fixed

5

A, B, C, D, E

Analysis of Variance

Source

DF

Adj SS

Adj MS

F-Value

P-Value

strip

4

0.3136

0.07840

1.16

0.377

position

4

0.5696

0.14240

2.10

0.143

electrode

4

4.2896

1.07240

15.83

0.000

Error

12

0.8128

0.06773

Total

24

5.9856

Model Summary

S

R-sq

R-sq(adj)

R-sq(pred)

0.260256

86.42%

72.84%

41.06%

Coefficients

Term

Coef

SE Coef

T-Value

P-Value

VIF

Constant

2.8240

0.0521

54.25

0.000

strip

1

-0.024

0.104

-0.23

0.822

1.60

2

-0.184

0.104

-1.77

0.103

1.60

3

0.096

0.104

0.92

0.375

1.60

4

-0.024

0.104

-0.23

0.822

1.60

position

1

-0.104

0.104

-1.00

0.338

1.60

2

-0.184

0.104

-1.77

0.103

1.60

3

0.136

0.104

1.31

0.216

1.60

4

0.216

0.104

2.07

0.060

1.60

electrode

A

0.596

0.104

5.73

0.000

1.60

B

-0.564

0.104

-5.42

0.000

1.60

C

-0.284

0.104

-2.73

0.018

1.60

D

0.316

0.104

3.04

0.010

1.60

Regression Equation

time

=

2.8240 - 0.024 strip_1 - 0.184 strip_2 + 0.096 strip_3 - 0.024 strip_4 + 0.136 strip_5
- 0.104 position_1 - 0.184 position_2 + 0.136 position_3 + 0.216 position_4
- 0.064 position_5 + 0.596 electrode_A - 0.564 electrode_B - 0.284 electrode_C
+ 0.316 electrode_D - 0.064 electrode_E

-------------------------------------

DEAR STUDENT,

IF YOU HAVE ANY QUERY ASK ME IN THE COMMENT BOX,I AM HERE TO HELPS YOU.PLEASE GIVE ME POSITIVE RATINGS

*****************THANK YOU***************

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