QUESTION ONE 2 = 2 ( x2 - 20 A) The income of a group of 10,000 persons was found to be normally distributed with mean GHc750 per month and standard deviation of GHc500. Show that of this group of about 95% had income exceeding GHc668 and only 5% had income exceeding GHc832. What was the lowest income among the richest 100