Help! Will give out medals to those that will explain how to answer this!!! Statistics
I know what standard deviation and what mean is but...I have no clue on this one :((
he scores of students in a Mathematics examination is normally distributed with a mean of 60 and a standard deviation of 8.
a) How many percent of the examinees got scores below 44?
b) How many percent of the examinees got scores above 68?
c) How many percent of the examinees got between 52 and 76?
d) If 50 students took the examination, how many got scores above 36?

Question

Help! Will give out medals to those that will explain how to answer this!!! Statistics
I know what standard deviation and what mean is but...I have no clue on this one :((
he scores of students in a Mathematics examination is normally distributed with a mean of 60 and a standard deviation of 8.
a) How many percent of the examinees got scores below 44?
b) How many percent of the examinees got scores above 68?
c) How many percent of the examinees got between 52 and 76?
d) If 50 students took the examination, how many got scores above 36?

amistre64 · Answer

find the zscores, and either table them up, or ti83 them

amistre64 · Answer

the ti83 is:  normalCDF(low,high,mean,sd)  and it gives you the percentage between low and high