Homework Sourse34 of college students say they use credit cards because of
34% of college students say they use credit cards because of the rewards program you randomly select 10 college students in ask each to name the reason he or she uses credit cards find the probability that the number of college students who say they use credit cards because of the rewards program is exactly 2 more than two between two and five inclusive
34% of college students say they use credit cards because of the rewards program you randomly select 10 college students in ask each to name the reason he or she uses credit cards find the probability that the number of college students who say they use credit cards because of the rewards program is exactly 2 more than two between two and five inclusive
Solution
X is number of students who use credit cards
X~B(10,0.34)
P(X=2) = binomdist(2,10,0.34,0) = 0.1873
P(X>2) = 1 - P(X<=1) = 1 - binomdist(1,10,0.34,1) = 0.9035
P(2<=X<=5) = P(X<=5) - P(X<=1) = binomdist(5,10,0.34,1) - binomdist(1,10,0.34,1) = 0.8199
Binomdist is an excel function
