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Nonsmokers26911513.4

Current smokers 5311410.1

Ex-smokers2811811.6

Tobacco chewers912612.2

1. Calculate the estimate of the within-groups variance

2.Calculate the estimate of the between-groups variance.

3 If you find that the population means are not all equal, use the Bonferroni correction to

determine where the differences lie (using Bonferroni formula, calculate p-values for each of the possible (6) pairs).

b. Where do I find the calculator for this problem? can I find it in Excel? please explain calculations step by step eg excel?( I Don`t know about programming software)