It is known that in a bag of mixed seeds, 45% are black grass. Use a suitable
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Question:
It is known that in a bag of mixed seeds, 45% are black grass. Use a suitable approximation to calculate the probability that in a random sample of 500 seeds.
(a) there are less than 200 black seed grass
(b) there are between 210 and 250 black grass seeds inclusive
(c) there are more than 240 black grass seeds.
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