SOLUTION: 33 % of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit car
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-> SOLUTION: 33 % of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit car
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Question 1137711: 33 % of college students say they use credit cards because of the rewards program. You randomly select 10 college students and 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 (a) exactly two, (b) more than two,
and (c) between two and five inclusive. If convenient, use technology to find the probabilities. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! exactly 2 is 10C2(.33^2)(.67*8)=0.1990
1 would be 10*.33*.67^9=0.0898
0 would be 0.0182
so more than two would be 1- probability (0 and 1 and 2)=0.693
3 would be 10C3*0.33^3*0.67^7=0.2614
4 would be 10C4*0.33^4*0.67^6=0.2253
5 would be 0.1332
2 and 5 inclusive is the sum of four terms=0.8189
