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According to one poll, 52% of households in a certain region had no landline and only had cell phone service. Suppose a random sample of

According to one poll, 52% of households in a certain region had no landline and only had cell phone service. Suppose a random sample of 30 households from the region is taken.

D. find the probability that between 15 and 20 households, inclusive, only have cell phone service.

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