Mathematics, 04.06.2021 19:50, kmc3490

According to a poll about phone use, 25% of all U. S. households are "wireless only," meaning they do not have a land Ilne. In a random sample of 15 households, what is the expected number of households that are wireless only?4
3.75
3
0.25

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According to a poll about phone use, 25% of all U. S. households are "wireless only," meaning they d...