00:01
So, we have been given that the mean of salaries is $25 ,000 and standard deviation is $2 ,000.
00:28
So we have to find the mean after increment of $2 ,500 increment.
00:37
Ok, so let us consider the salaries to be x1, x2, x3 up to xn.
00:49
So from the given question we can state that x1 plus x2 plus x3 up to plus xn upon n is given as $25 ,000.
01:06
Ok, so we have to add $2 ,500 to each salary.
01:11
So it would be x1 plus $2 ,500 plus x2 plus $2 ,500 up to plus xn plus $2 ,500 whole divided by n.
01:35
Whole divided by n.
01:37
Ok, so that would be our new mean.
01:41
So we can write it as that is equal to x1 plus x2 plus up to xn plus $2 ,500 multiplied by n divided by...