QUESTION 2Table Q2 shows the amount of weight losses of certain machine parts (in milligrams) due tofriction, when 3 different lubricants were used under controlled conditions:Table Q2 Amount of weight lossesLubricantWeight losses (in milligrams)A12.211.813.111.03.94.110.38.4B10.95.713.59.411.415.710.814.0C12.719.913.611.718.314.322.820.4(a)Does the type of lubricant affect the mean weight losses of that particular parts? Usea = 0.01.(b) Find a 95% confidence interval on the mean weight losses if lubricant A is in used?

Name: QUESTION 2Table Q2 shows the amount of weight losses of certain machi
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Description: QUESTION 2Table Q2 shows the amount of weight losses of certain machine parts (in milligrams) due tofriction, when 3 different lubricants were used under controlled conditions:Table Q2 Amount of weight lossesLubricantWeight losses (in milligrams)A12

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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 different lubricants were used under controlled conditions: Table Q2 Amount of weight losses Lubricant Weight losses (in milligrams) 12.2 11.8 13.1 11.0 3.9 4.1 10.3 8.4 10.9 5.7 13.5 9.4 11.4 15.7 10.8 14.0 12.7 19.9 13.6 11.7 18.3 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?