Are parents of girls more inclined to buy them a car when they leave for college than parents of boys? simple random samples of 40 girls and 45 boys are taken from a large university on the west coast. when interviewed, 20 girls and 21 boys in the sample responded that their parents bought them a car. what is a 95% plus four confidence interval for the difference in population proportions of girls and boys whose parents bought a car for them when they left for college? use girls as group 1 and

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

a .4y4

hope this !

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32