...cellular phone. If you call? 8)According to a Wall Street Journal article, 70% of all US households have a cellular phone.
If you called 8 housed holds at random, what is the probability that fewer than 3 households have a cellular phone?
For a sample of 25 households, find the mean and standard deviation of the number of households with cellular phones.
Is it unusual that in a sample of 25 households, only 4 have cellular phones? Explain.
If you called 8 housed holds at random, what is the probability that fewer than 3 households have a cellular phone?
For a sample of 25 households, find the mean and standard deviation of the number of households with cellular phones.
Is it unusual that in a sample of 25 households, only 4 have cellular phones? Explain.