QUESTION 2 Table Q2 shows the amount of weight losses of certain machine parts (in milligrams) due to friction, when 3 d

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Question 2 Table Q2 Shows The Amount Of Weight Losses Of Certain Machine Parts In Milligrams Due To Friction When 3 D 1 (23.71 KiB) Viewed 234 times

QUESTION 2 Table Q2 shows the amount of weight losses of certain machine parts (in milligrams) due to friction, when 3 different lubricants were used under controlled conditions: Lubricant Table Q2 Amount of weight losses Weight losses (in milligrams) 11.8 13.1 11.0 3.9 4.1 A 12.2 10.3 8.4 B 5.7 13.5 15.7 10.8 14.0 10.9 12.7 9.4 11.7 11.4 18.3 C 19.9 13.6 14.3 22.8 20.4 (a) Does the type of lubricant affect the mean weight losses of that particular parts? Use a=0.01. (b) Find a 95% confidence interval on the mean weight losses if lubricant A is in used?