Question

n = 80 5,= 5.4 A market analyst wants to know if the new website he designed is showing increased Website 1 Website 2 page views per visit. A customer is randomly sent to one of two different websites, offering n = 95 the same products, but with different designs. y =6.9 y2 = 6.6 The data is shown in the table to the right. 5. = 53 Complete parts a through c below. a) Find the estimated mean difference, y-Yz. in page visits between the two websites The estimated mean age difference between the two websites is pages. (Type an integer or a decimal) b) Find the standard error of the estimated mean difference. SE(71-7) - pages Round to two decimal places as needed.) c) Calculate the t-statistic for the observed difference in mean page visits assuming that the true mean difference is 0.

Answer 1

Sohdon Given data, n = 80, n=95 ģ= 6,9 9 = 6,6 2 5,- 5.4 Ş: : 5.3 a) The estimated mean difference y-y 6.9 - 6.6 0,3 difference between in the estmated mean age two websites is 10.3/pages (6) standard soooo of estimated meas difference 2 5€(9-%): Links 52 P2 2 5:4 6.32 + 0.8125 : 80 95

Calculate to statistics for observed difference in mean page wside assurzing me., 4:0 that are mean difference is o (4-4)- 56C9-9) (6.9-6.6)-0 0.8125 0.3 : 0.3692 0.8125 2 : 0.3692