Four different paints are advertised as having the same drying time. To check the manufacturer's claims,...

Four different paints are advertised as having the same drying time. To check the manufacturer's claims, five samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. The following data were obtained. We wish to test at 5% significance whether mean drying time is same for each type of paint. Treated Sum of Squares = 330 and Error Sum of Squares = 692. (Hint: Construct ANOVA Table)

Paint 1	Paint 2	Paint 3	Paint 4
128	144	133	150
137	133	143	142
135	142	137	135
124	146	136	140
141	130	131	153

A. Find treatment Mean Square

B. Find error mean square

C. What is the value of your calculated test statistic (2 decimal)

Expert Solution

a) treatment Mean Square =110

b) error mean square =43.250

c) calculated test statistic F = treatment Mean Square/error mean square =2.54

orchestra answered 2 years ago

Four different paints are advertised to have the same drying times. To verify the manufacturer’s claim,...

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Four different paints are advertised as having the same drying time. To check the manufacturer's claims,...

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