Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.
a.Compute the overall mean .
b.At 95% confidence using the critical value and p-value approach, test to see if there is a significant difference among the means.

Question

Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.  
a.Compute the overall mean  . 
b.At 95% confidence using the critical value and p-value approach, test to see if there is a significant difference among the means.

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The Answer of Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.  
a.Compute the overall mean  . 
b.At 95% confidence using the critical value and p-value approach, test to see if there is a significant difference among the means.

Random Samples Were Selected from Three Populations