Jeremy sells a magazine which is produced in order to raise money for homeless people.The probability of making a sell is independently 0.09 fr each person he approaches.Given that he approaches 40 people,find the probability that he will make;
(a) Two or few sells
solution.
B(40,0.09)
binomial, n=40P=0.09
0.0289-0.0290
(b)exactly 4 sells
solution
P(4)=0.7103-0.5092=0.2011
(c) More than 5 sells
solution
P(>5)=1-0.8535
0.146-0147=0.296
1 answer
what about if he approaches 10 people?
1 answer