Braking distance was evaluated for 4 different brake materials. Run an analysis of variance to determine if there is a difference in treatments? Use the six steps of hypothesis testing at a 0.05 level of significance. Use the below data. Disk Material 1 Disk Material 2 Disk Material 3 Disk Material 4
69.8 78.1 77.7 90.6
65.6 81 80.9 91
71.7 81.9 80.8 89.4
70.5 81.8 79.8 88.1
68 78.8 81.1 87.5
69.3 78.9 82 92
71 81.4 80 90.7
68.8 82.2 80.8 88.4
66.7 79.8 80.9 89.7
72 76.7 79.8 88.1
72.8 80.1 80.1 89.4
67.2 78.7 80.4 89.2

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Step-by-step explanation:

3+1

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

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