I have no idea how to go about this! I've been checking all through my notes and the more I look the more confused I get. Can someone please help me? I reall need to compelte this asap :(

Guest May 13, 2019

#1**+1 **

a. On the curve....put 71 in the middle and the three deviations (the vertical segments to the base of the curve ) to the right will be 77, 83 and 89

And the 3 deviations to the left - starting from the mean and working to the left- will be 65, 59 and 53

b. z score = [ Angelic'a grade - Mean ] / Standard Deviation = [ 76 - 71 ] / 6 = 5/6 = . 83

c. Looking at a z score table..... .83 equates to ≈ .7967 = 79.67%

This means that she scored highr than about 80% of the students

d. About 20% scored higher....so.....20 (185) = 37 students

CPhill May 14, 2019