7 Write a formula that uses only the marginal totals and can be used to fill in the cells of a table to make the variables independent. Check your formula using this table. A B Total C 30 D 70 Total 40 60 100

The boxplot below shows salaries for Construction workers and Teachers. Construction Teacher 20 25 30 35 40 45 50 Salary (thousands of S) If a person is making the maximum salary for a construction worker, they are making more than what percentage of Teachers?

During 10 weeks, a dealership recorded the number of TV ads (x variable) and the number of cars sold (y variable).  The results are given in the following table. X 6 20 0 14 25 16 28 18 10 8 Y 15 31 10 16 28 20 40 25 12 15     Please asnwer questions on picture thank you

Suppose classmates who graduated in 2004 compared their median incomes ten years later. The bar graph displays the median income, in thousands of dollars, for each classmate during the time intervals from 60 43 38 2005-2009 and 2010-2014. 35 35 For the individual with the largest dollar value increase 30 in median income over the two time intervals, 20 determine the amount of increase. Martina Roger Scott Becky Yronne Classmates 2005 - 2009 2010 - 2014 By what percentage did Roger's median income decrease over the two time intervals? Give your answer to the nearest percent. Percentage: % Median income (thousands of dollars)