I have two questions where I keep getting the last parts (question #1 [e], question #2 [f]) wrong. I have all the other answers right so I'm not sure what I am doing wrong with these two. I went ahead and wrote all the parts down as well as the answers and for the two I got wrong I wrote what I got even though it keeps saying it's wrong.

Question

(CA = Correct Answer)
(MA = My Answer)

Question #1
One hundred draws will be made at random with replacement from a box containing

1 1 2 2 2 4

(a) the smallest possible sum is (CA: 100)
(b) the largest possible sum is (CA: 400)
(c) the sum of the draws will be around (CA: 200)
(d) give or take how much (CA: 10)
(e) What is the chance that the sum will be bigger than 250? Round your answer to four decimal places (MA: .3085)

Question #2
Four hundred draws will be made at random with replacement from a box containing

1 3 5 7

(a) What is the average of the tickets in the box? (CA: 4)
(b) What is the SD of the tickets in the box? Round your answer to 2 decimal places. (CA: 2.24)
(c) What is the expected sum of the draws? (CA: 1600)
(d) Give or take how much? Round your answer to 1 decimal place. (CA:44.8)
(e) What is the chance that the sum will be more than 1,500? Round your answer to 4 decimal places. (CA: .9871)
(f) What is the chance that the sum will be less than 2,700? (MA: .9998)