Three large groups are having picnics at Wild Coast Amusement Park. In the first group, there are 341 adults and 532 children. In the second group, 485 of 967 people are children. In the third group, 323 of the 719 people are adults. What percent of group one are children? ​

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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

Plzzz answer both questions and i will give you 100 points