Question: Browser - Has browser usage changed over time? The first year's data is from 2007. Find the proportions of users by browser type and consider

Browser - Has browser usage changed over time? The first year's data is from 2007. Find the proportions of users by browser type and consider this as the distribution under the null. Test to see if users in 2012 have a significantly different distribution in browser. - Can we predict site visit length by browser use? ? Do we need to do more to draw in particular users? Use regression methods to address each of the following models: a. Site visit length by browser. b. Site visit length by browser, controlling for year. c. Site visit length by browser, controlling for year and age. - Which model is the best between a, b, and c? What variables are significant? What is your interpretation? Consider the residual plots. Are there any problems with these regressions? Draw any conclusions and make any recommendations you'd like to offer your client.

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