Aquiz has multiple-choice questions, each with 5 choices. the answer possibilities are distributed evenly. if a student gets a correct answer they will receive +3 points. if they leave it blank, they will receive 0 points. if they write an incorrect answer, they will receive -1 point. a student guesses the answers to some questions. determine on average, in the long run, how many points the student will score. (write your answer as a decimal, with a minus sign if needed.)

On an average the number of points that a student will score is:

                                 -0.2

Step-by-step explanation:

The probability of choosing a correct answer = 1/5

( Since out of the 5 choices we have just one correct answer)

The probability of choosing a wrong answer = 4/5

( Since out of the 5 choices only one is correct and 4 are incorrect)

Scores received on correct answer = +3

Scores received on wrong answer = -1

The average scores, in long run will be equal to the expected value. The expected value E, in this case will be:

Thus, in long run, the student will score -0.2 points on average.  

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

true !

step-by-step explanation: