Thirty gpas from a randomly selected sample of statistics students at a college are linked below. assume that the population distribution is approximately normal. the technician in charge of records claimed that the population mean gpa for the whole college is 2.84. a. what is the sample mean? is it higher or lower than the population mean of 2.84? b. the chair of the mathematics department claims that statistics students typically have higher gpas than the typical college student. use the four-step procedure and the data provided to test this claim. use a significance level of 0.05.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168

      2

  2 is to go somewhat to the top right of a because it is squared    

v= a h/3