In a gated community having 1000 flats- 500 families purchase Jersey toned milk. Among the families, a sample of 100 fam

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answerhappygod
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In a gated community having 1000 flats- 500 families purchase Jersey toned milk. Among the families, a sample of 100 fam

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In a gated community having 1000 flats- 500 families purchase
Jersey toned milk. Among the families, a sample of 100 families are
chosen. Using normal approximation to binomial distribution,
determine the probability that
a) At least 60 of them purchases Jersey milk?
b) Not more than 55 families purchases Jersey milk?
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