3Minisms X Chap 7 H\\ x 21478 * @ Take a Tes X X 2 FIU Proct * ~ Proctorio x MyStatlal x * TREF X + C a mathxl.com/Student/PlayerTest.aspx?testld=236313390 #:AVA Commercial Adve... E Development of a... The science that c.. The Affects of Sci.. b 30 Points, How Sc... ) Economicsmia !.. BLAFS @ Results - Jingzon. Logic gates | AP C.. STA261 M C Jingzong Zhuo 10/14/21 1:36 PM Test: Midterm-4e Question 9 This Test: 125 pts possible Submit Test A study discusses a stomach cancer screening program that began in a certain country in 1996 and was expanded geographically through 2005. The people in the study were given the option to receive screenings every two years. The goal of the study was to compare incidence-based rates of death from stomach cancer across four groups. Data were analyzed for 69,738 people. Rates of death were reduced in the screening group as compared to the historical screening group, and also in the nonscreening group as compared to the historical nonscreening group. Complete parts a through c below Click the icon to view the four groups a. Is this an observational or experimental study? O A. The study is an observational study because at least one of the variables is controlled by the researchers O B. The study is an experiment because at least one of the variables is controlled by the researchers C. The study is an observational study because none of the variables are controlled by the researchers D. The study is an experiment because none of the variables are controlled by the researchers b. Identify the response variable and the explanatory variable The response variable is and the explanatory variable is c. Does the study prove that being offered screenings causes a reduction in death rates associated with s O A. Yes, the study found an association between the two variables whether or not there was a screening program B. Yes, there is anecdotal evidence connecting the two variables C. No, it is unlikely that the two variables are connected the rate of death from stomach cancer D. No, a lurking variable may exist that influences both variables Qi OK Time Remaining: 01:09:26 Next 1:36 27C 350 25 4Box 2021/10/15 O GEFORCE RTX