Arandom sample of 2400 people are asked if they favor a government proposal to develop new nuclear power plants. if 40 percent of the people in the country are in favor of this proposal, find the expected value and the standard deviation for the number s2400 of people in the sample who favored the proposal.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

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.

the correct answer is $7.38

step-by-step explanation: