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Working with probability given a specific situation

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Do you try to pad your insurance claim to cover your deductible? About 40% of all U.S. adults will try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 128 insurance claims to be processed in the next few days. What is the probability that

a. half or more of the claims have been padded?
b. Fewer than 45 of the claims have been padded
c. From 40 to 64 of the claims have been padded
d. More than 80 of the claims are not padded

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Probability that 1 claim is padded = 40% = 40/100 = 0.4

a) Probability that half or more of the claims are padded
p = p64+p65+p66+....+p128
Where pn = probability ...

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