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The thickness measurements of steel sheets are (in mm) 89.40 81.60 80.90 82.00 65.70 64.80 91.20 86.20 77.10 71.30 84.00 87.80 72.50 78.20 78.30 89.00
The thickness measurements of steel sheets are (in mm)
89.40
81.60
80.90
82.00
65.70
64.80
91.20
86.20
77.10
71.30
84.00
87.80
72.50
78.20
78.30
89.00
(a) Can you support a claim that the mean percent of Steel thickness exceeds 79 percent?
(b) What is the P-value for this test? Use bounds for P-value.
(c) What sample size would be required to detect a true mean of sheet thickness 80.68 mm with probability 95%?
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