Answer these

A randomized controlled trial was conducted to nd out if using two attempts for a series of ten quizzes achieved better results than using single attempt. A large cohort of students were randomized into two groups; students in group A (exposed) were told to use both attempts while students in group B (not exposed) had only one attempt per quiz (in case you are wondering these students were more than happy to just do all quizzes only once and have extra time for things they considered important), An overall grade of greater than 70% was considered the desirable 'outcome'. There were 1,033 students in group A and out of these 866 achieved greater than 70%, while there were a total of 1,060 students in group B and 179 scored higher than 70%. Calculate a suitable measure of association/effect to nd out if those who used both attempts were more likely to achieve >70% compared to those Who used single attempt & results are probably going to speak for themselves z). Only nal answer is needed with two decimals after correct rounding. A team of chocoholic researchers conducted a study where they recorded blood pressure of all the participants at baseline and then advised them to eat a certain amount and a certain brand of chocolate every day (along with a special diet) for 3 months. They recorded blood pressure at the end of three months, once again. Now they want to know if eating dark chocolate made any difference to the participants' blood pressure but they need your help to identify which one of the following will be a suitable test. Please identify a test which is suitable for the purpose ofthis study. 0 One sample t test 0 Paired Samples t test 0 Levene's test 0 Independent Samples t test O Pearson's Correlation test 0 Pearson's Chi squared test