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英语翻译求英语数学大神翻译一道英文分布方面的数学题,10 randomly selected packets of cr

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英语翻译
求英语数学大神翻译一道英文分布方面的数学题,
10 randomly selected packets of crisps are put in a family pack.from a sample of 20 randomly selected family packets find the probability that no family packets will have more than 4 packets of ready salted.
a crisp manufacture produces ready salted and flayoured crisps,30%of the packets produced are ready salted,a random sample of 10 packets of crisps are taken 这个是题干
随机选择10包薯片放在家庭装.从20个随机选择的样本家庭包中找到不超过4包已经加盐的家庭包的可能性
再问: a crisp manufacture produces ready salted and flayoured crisps,30%of the packets produced are ready salted,a random sample of 10 packets of crisps are taken 这个是题干