A statistics professor formed the opinion that students who handed in quiz and exams early out-performed students who handed in their papers later. To develop data to decide whether her opinion is valid, she recorded the amount of time (in minutes) taken by students to submit their midterm tests (time limit 90 minutes) and the subsequent mark for a sample of 12 students. Time 90 73 86 85 80 87 90 78 84 71 72 88
Mark 68 65 58 94 76 91 62 81 75 83 85 74

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation:

●yes, this statement is absolutely apt.

hope this you

the answer for this is 0.25 km. : )