.No.5. a) why confounding is use

Researchers wanted to test the happiness score across 3 time-points   Happiness 1 Happiness 2 Happiness  3 22 38 42 31 40 50 20 32 43 23 33 37 What is the Fbetween here (hint: Σ(MSubjects - GM)2 = 162.74, Σ(MHappiness - GM)2 = 735.50, Σ(X - GM)2 = 936.25)?

11. Recent research has shown that creative people are menter admitted that the wrong bubble sheet had they were asked to transfer their answers to a bubble terparts (Gino and Ariely, 2012). Participants in the general knowledge test for which the participants naires and then returned to the lab several days later circled their answers on the test sheet. Afterward, sheets for computer scoring. However, the experi- e likely to cheat than their less creative coun- more terpa first completed creativity assessment question- naines eries of tasks. One task was a multiple-choice so that the correct answers were been copied still faintly visible. Thus, the participants had an Opportunity to cheat and inflate their test scores Higher scores were valuable because participants were paid based on the number of correct answers. 1 However, the researchers had secretly coded the original tests and the bubble sheets so that they could measure the degree of cheating for each participant. Assuming that…

2.2 Losses at an oil refinery (in millions of dollars) due to excess heat can be divided according to the reason behind the generation of excessive heat. oversupplying fuel excess air carelessness of operator incomplete combustion 202 124 96 27 (a) Draw a Pareto chart. (b) What percent of the loss occurs due to (1) excess air? (2) excess air and oversupplying fuel? 2.7