The tables below give the probability distributions for averages of two biology classes taught by two different teachers at a university. If a student from each class is selected at random, what is the expected difference in their grades? Teacher X xn 50 60 70 80 90 pn 0.05 0.1 0.2 0.35 0.3 Teacher Y yn 50 60 70 80 90 pn 0.05 0.05 0.05 0.8 0.05

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

Astudent drew a circle and two secant segment. he concluded that if pq ~= ps, then qr ~= st. do you agree with the student’s conclusion? why or why not?

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image