Twenty-one daily responses of stack loss (y) (the amount of ammonia escaping) were measured with air...

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Statistics

Twenty-one daily responses of stack loss (y) (the amount ofammonia escaping) were measured with air flow x1, temperature x2,and acid concentration x3.

  1. Check the significance of the model using ANOVA via Minitab andstate your conclusion at 5% alpha level. [5 marks]
  2. Using stepwise method, find the best regression model by Minitaband explain the results obtained at each step. [3 marks]

yx1x2x3

42

80

27

89

37

80

27

88

37

75

25

90

28

62

24

87

18

62

22

87

18

62

23

87

19

62

24

93

20

62

24

93

15

58

23

87

14

58

18

80

14

58

18

89

13

58

17

88

11

58

18

82

12

58

19

93

8

50

18

89

7

50

18

86

8

50

19

72

8

50

19

79

9

50

20

80

15

56

20

82

15

702091

Answer & Explanation Solved by verified expert
4.3 Ratings (856 Votes)
Using MinitabFrom ANOVA F value 8964 and p value 0000    See Answer
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