# Question: A B testing is a method used by businesses to

A/ B testing is a method used by businesses to test different designs and formats of a web page to determine if a new web page is more effective than a current web page. Web designers tested a new call to action button on its web page. Every visitor to the web page was randomly shown either the original call to action button (the control) or the new variation. The metric used to measure success was the download rate: the number of people who downloaded the file divided by the number of people who saw that particular callto action button. Results of the experiment yielded the following:

a. At the 0.05 level of significance, is there evidence of a difference in the download rate between the original call to action button and the new call to action button?

b. Find the p value in (a) and interpret its value.

c. Compare the results of (a) and (b) to those of Problem 10.31 on page 347.

a. At the 0.05 level of significance, is there evidence of a difference in the download rate between the original call to action button and the new call to action button?

b. Find the p value in (a) and interpret its value.

c. Compare the results of (a) and (b) to those of Problem 10.31 on page 347.

**View Solution:**## Answer to relevant Questions

1 Fitting a straight line to a set of data yields the following prediction line: Ŷi = 2 + 5 Xi a. Interpret the meaning of the Y intercept, b0. b. Interpret the meaning of the slope, b1. c. Predict the value of Y for X = 3. In Problem 12.7 on page 424, you used the plate gap on the bag sealing equipment to predict the tear rating of a bag of coffee (stored in Starbucks). Using the results of that problem, a. determine the coefficient of ...In problem 12.4 on page 423, you used the percentage of alcohol to predict wine quality. Perform a residual analysis for these data (stored in Vinho Vercla). Evaluate whether the assumptions of regression have been seriously ...The residuals for 15 consecutive time periods are as follows: a. Plot the residuals over time. What conclusion can you reach about the pattern of the residuals over time? b. Compute the Durbin Watson statistic. At the 0.05 ...You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of n = 20, you determine that SSR = 60 and SSE = 40. a. What is the value of FSTAT? b. At the a = ...Post your question