Question 3:

the figure below shows a shaded region and a nonshaded region. angles in the figure that appear to be right angles are right angles.

there's a rectangle with 2ft 16ft and 8ft. inside of the triangle, the shaded region is 8ft,2ft, 2ft, and 1ft

what is the area, in square feet, of the shaded region?
square feet

what is the area, in square feet, of the nonshaded region?
square feet

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.