3. Mrs. McBee recorded the number of minutes her students spent studying one night and their grade on a pop
quiz the next day. The scatterplot below shows the data she
recorded.

Based on the scatterplot, what is the best prediction of the
grade a student who studied for half an hour would make?
A. 60
B. 50
C. 40
D. 80

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?