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Example 159

 

Example 159: Four methods of blending penicillin were compared in a randomized block design.   The blocks are blends of the raw material.   Construct the ANOVA table.   Are there differences between the methods?   the blends? Use a 10% significance for both.

 

Method

Totals

Blend

A

B

C

D

 

 1

89

88

97

94

368

2

84

77

92

79

332

3

81

87

87

85

340

4

87

92

89

84

352

5

79

81

80

88

328

 

Totals

420

425

445

430

1720

 

 

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