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Three different paints were advertised as having the same dry time. To check manufacturer's claim, five...

Three different paints were advertised as having the same dry time. To check manufacturer's claim, five random samples of each paint are taken (5 cans of each paint). The dry times in minutes (until ready to apply second coat) were recorded. At alpha of 0.05, test to see whether the mean drying time is the same for each type of paint. What is your conclusion? Group 1 Group 2 Group 3 Population 1 Population 2 Population 3 Treatment 1 Treatment 2 Treatment 3 "Paint 1 Time (Mins)" "Paint 2 Time (Mins)" "Paint 3 Time (Mins)" 131 147 153 140 136 145 138 145 138 129 148 143 144 133 155 Please Explain in the excel sheet

Math   Statistics-And-Probability   
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Answer #1

Given data:

T1 T2 T3
131 147 153
140 136 145
138 145 138
129 148 143
144 133 155

We will perform One-Way ANOVA test to compare mean of 3 Treatments

Null Hypotheses: All the 3 paints have same drying time

Alternate Hypotheses: Atleast one of the paints has different drying time

Hence we need to Reject the Null Hypotheses.

There is atleast one paint whose mean is different

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