The random variable x represents the number of computers that families have along with
the corresponding probabilities. find the mean and standard deviation for the random
variable x.
the x values are 0,1,2,3,4 and the p(x) values are 0.49, 0.05, 0.32, 0.07, 0.07

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.