Question 872333
This is a binomial distribution problem


(n C k)*(p)^(k)*(1-p)^(n-k) ... n C k is found through the combination formula (n!)/(k!*(n-k)!)


(7 C 2)*(0.28)^(2)*(1-0.28)^(7-2)


21*(0.28)^(2)*(1-0.28)^(7-2)


21*(0.28)^(2)*(0.72)^5


21*0.0784*0.1934917632


0.31856483893249



Final Answer: <font color="red">0.31856483893249</font> (this is approximate, round appropriately if needed)