An exercise 15 - 20 assume that random guesses are made for 8 multiple choice questions on an SAT test so that there are any equals 8 trials with the probability of success given by P = 0.20 find the indicated probability for the number of correct answers

Lisa, an experienced shipping clerk, can fill a certain order in 9 hours. Felipe, a new clerk, needs 10 hours to do the same job. Working together, how long will it take them to fill the order?Lisa, an experienced shipping clerk, can fill a certain order in 9 hours. Felipe, a new clerk, needs 10 hours to do the same job. Working together, how long will it take them to fill the order?An exercise 15 - 20 assume that random guesses are made for 8 multiple choice questions on an SAT test so that there are any equals 8 trials with the probability of success given by P = 0.20 find the indicated probability for the number of correct answers

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: