A random sample of 100 students was taken and their final exam mark was recorded in the following frequency table. Mark
Posted: Sun Oct 03, 2021 11:06 am
A random sample of 100 students was taken and their final exam mark was recorded in the following frequency table. Mark [0,20) [20,40) [40, 60) [60, 80) [80, 100) Freq 10 28 23 30 9 100 a b. Compute the mean of this frequency distribution Can we conclude that the data comes from a normally distributed population a standard deviation of 20? Use a = 0.05.