to raise money for the 2008 election campaign, his analytical h his website. The

Question

to raise money for the 2008 election campaign, his analytical h his website. The original version had a button to join the campaign 5. To increnase Barack Obama's visibility and team cond ucterd an A/B test wit that read "Sign Up"; the alternative version's button read Learn Mo original site, 5851 clicked the button. Of 77729 visitors to the alternative Based on the following confidence interval, can it be concluded that the number of people clicking the button between the two sites (a) Since the CI contains 0, there is no significant difference in the sites re" Of 77858 visitors to the site, 6927 clicked the button. there is a significant difference in The 95% CI is : (0.0112,0.0167) (b) Since the CI does not contain 0, there is a significant difference in the (c) Since the CI does not contain 0, there is not a significant diference in the sites (d) Since the CI contains 0, there is a significant difference in the sites sites

Explanation / Answer

If the confidence interval does not contain the null hypothesis value, the results are statistically significant.

So, here o is not there in the interval

Thus, null is rejected

We can say that there is a significant difference

B option

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