Direction: Find the mean, variance, and standard deviation of the following probability distribution then interpret the computed values. 1) Variable z representing the number of male teachers per...

Extracted text: Direction: Find the mean, variance, and standard deviation of the following probability distribution then interpret the computed values. 1) Variable z representing the number of male teachers per Elementary school. X 3 4 P(x) 40% 32% 11% 9% 8% 2) The number of mobile phones sold per day at a retail store varies as shown in the given probability distribution below. Find the expected number of mobile phones that will be sold in one day. 30 33 38 40 50 P(x) 0.2 0.2 0.35 0.23 0.02