The lengths of the rectangle have been measured to the nearest tenth of a centimetre. work out the following writing down all the figures on your calculator display a) the upper bound for the area of the rectangle
b) the lower bound for the perimeter of the rectangle.
length 87.3
width 51.8

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0