Chapter 12.2

Question 13, Section 12.1 Hw Score: 50.88%, 11.7 of Exercise 2 23 points 0 Points: 0 of1 Homework: Chapter Twelve Homework Pan 1 of 5 _ _ A market analyst wants to know if the new website he designed is showing increased page views per visit. A Questlon \"St '6 customer is randomly sent to one of two different websites, offering the same products, but with different designs. The accompanying table shows the data from ve randomly chosen customers from each website. Complete parts a through 6 below. a Click the icon to view the data table of website page views per visit. 0 Question 9 <:> 0 Question 10 a) Find the sample mean page views for each website. {,1 = I: pages {,2 = I: pages 0 Question 11 (Type integers or decimals.) Question 14, Section 12.1 Hw Score: 50.88%, 11.7 of Exercise 3 23 points Part 1 of 3 0 Points: 0 of 1 Homework: Chapter Twelve Homework A developer wants to know if the El i6 houses in two different neighborhoods were built at roughly the same time. She hires an assistant to collect a random sample of houses from each neighborhood and nds S1 = 7-28 52 = 7-12 0 Question 9 that the summary statistics for the two neighborhoods are as shown. Complete parts a through 0 below. Question list y1=53.7 y2 =47.1 0 Question 10 a) Find the estimated mean age difference, 311 - 92, between the two neighborhoods. 0 Question 11 The estimated mean age difference between the two neighborhoods is D years. (Type an integer or a decimal.) Question 15, Section 12.1 Hw Score: 50.88%, 11.7 of Homework: Chapter Twelve Homework Exercise 4 23 points Part 1 of 3 0 Points: 0 of 1 . . A market analyst wants to know if E! Question list '6 the new website he designed is Website 1 Website 2 showing increased page views per visit. A customer is randomly sent to _ _ one of two different websites. y1 _ 7'4 yZ _ 6'8 0 Question 10 offering the same products. but with S1 =45 $2 = 4-5 different designs. The data is shown in the table to the right. Complete parts a through c below. 0 Question 11 <:> x/ Question 12 a) Find the estimated mean difference, 91 4/2, in page visits between the two websites. The estimated mean age difference between the two websites is D pages. (Type an integer or a decimal.) 0 Question 13 Question 16, Section 12.2 Hw Score: 50.88%, 11.7 of Homework: Chapter Twelve H k Exercise 7-T 23 points omewor Part 1 of 3 0 Points: 0 of 1 . _ A developer collects a random sample B Quest|on I|st IQ of the ages of houses from two Neighborhood 1|Neighborhood 2 neighborhoods and nds that the n1 = 35 n2 =40 summary statistics for each are as - _ - _ shown. Test the hypothesis that the y1 _ 53'1 y2 _45'7 . mean age of houses in the two 31 = 7.36 s2 = 7.77 O QueSt'on 13 neighborhoods is the same. Assume t- 4 23 that the ages of houses in each neighborhood follow a Normal _ distribution. Complete parts a through 0 Question 14 6 below. E) 0 Question 15 a) Calculate the Pvalue of the statistic given that the approximation formula for degrees of freedom gives df = 72.5. 0 Question 16 The Pvalue is D. (Round to three decimal places as needed.)