Acompany manufacturing computer chips finds that 8% of all chips manufactured are defective. management is concerned that high employee turnover is partially responsible for the high defect rate. in an effort to decrease the percentage of defective chips, management decides to provide additional training to those employees hired within the last year. after training was implemented, a sample of450 chips revealed only 27defects. was the additional training effective in lowering the defect rate?

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