I got this question wrong on my midterm, can you please solve and show steps/ work on how to get the correct solution. Thank you.

(b) (3 points) A sample of 23 observations has a standard deviation s = 1.9 and Ex, = 14655. Find the mean of the 23 observations. 123 X = 1. 9 = E ( X- X )2 23 23 - 1 Z X - n x ( X - Y) ( x - 4) *2 - 2 XY+ y X - 2xx + X 1. 9 = 14655 -23(23x) X X -2 -2 2 M 2 2 1. 9 . 22 = Page 2 - 14575. 58 27. 55308129 - 145 75.58 =-23 x 23 X= -529