5 Marks According to the World Bank, only 9% of the population of Uganda had access to electricity as of 2009. Suppose we randomly sample 160 people in Uganda. Let X= the number of people who have access to electricity. a) What is the probability distribution for X? b) Using the formulas, calculate the mean and standard deviation of X. c) Find the probability that 17 people in the sample have access to electricity. Show working or give the excel formula with the parameters. d) Find the probability that at most ten people in the sample have access to electricity. Show working or give the excel formula with the parameters. e) Find the probability that more than 35 in the sample have access to electricity. Show working or give the excel formula with the parameters.​

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

you divide them and then you get the answer i took this class this year

step-by-step explanation: