Question 1088664
 The mean of 20 observations in an experiment is 4.
 If the observed largest value is 23, Find the mean of the remaining observations.
:
let a = the average of the remaining 19 observatons
{{{((19a + 23))/20 = 4}}}
19a + 23 = 4 * 20
19a = 80 - 23
19a = 57
a = 57/19
a = 3 is the mean of the remaining observatons