Information about the age of participants in a robotics competition is in the image The middle 50% of the data is between what two numbers?
16 and 33
13 and 31
11 and 33
11 and 16

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

This is about circle theorems. someone asap : (

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