toyota questions 2 - 8

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Toyota.xlsx

Sheet1

Observations
Samples 1 2 3 4 Averages
1 1.9 1.8 2.1 2.1 2.0
2 2.0 2.2 2.4 2.0 2.2
3 1.9 2.1 2.2 2.4 2.2
4 1.8 2.2 2.1 1.7 2.0
5 2.2 1.9 2.1 2.2 2.1
6 1.7 1.8 2.0 2.0 1.9
7 2.0 2.1 1.8 1.6 1.9
8 1.9 1.6 1.7 2.0 1.8
9 1.7 1.8 1.9 2.1 1.9
10 1.8 1.6 1.9 2.2 1.9
Mean 1.9625
Std Dev 0.2070
Norm Dist 0.0173
1 0.0173 is expected to be greater than the thickness
2 upper limit 2.4
lower limit 1.4