Question

Test# 1 2 3 4 5 6 Mean Range Monday 96 74 92 84 65 77...

Test#

1

2

3

4

5

6

Mean

Range

Monday

96

74

92

84

65

77

81.33

31

Tuesday

93

99

73

63

98

76

83.67

36

Wednesday

64

92

101

91

73

90

85.17

37

Thursday

100

67

86

76

99

91

86.50

33

Friday

84

97

76

92

82

99

88.33

23

2) If the engines with NOx emission above 80mg/km are "in violation" of EPA regulations prepare a control chart for monitoring the proportion of engines in violation of the EPA guidelines with a 95% confidence interval. Is the proportion of "in violation" in statistical control during the past five days yes or no explain.

Chart type:

UCL=

CL=

LCL=

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