In this sample the mean commute time is 28.1 minutes with a standard deviation of 18.8 minutes Can we conclude from this data that the mean commute time in the US is less than half an hour Conduct a hypothesis test at the 5 level of significance What is the p value for this hypothesis test

What is f(3) for the quadratic functionf(x)=2x2 + x – 12? f -3g 3h 6i. 9

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

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