A quality control plan an assemble line involves sampling n finishing
items per day and counting,the nimber of defectives If p denote the
probablity of observing a defective then Y has a binomial distribution ,
assuming that a large number of items are produced by theline But p varies
form day to day and is assumed to have a uniform distribution on the interval
from 0 to 1
a Find the unconditional probablity mass function of Y
b Find the expected value and variance of Y
請會的幫我解題一下 Orz
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