State which distribution – normal, binomial or Poisson – is likely to be appropriate for calculating the final value of each of the following probabilities. In each case specify any assumptions that would need to be made, and any parameters of which you would need to know the value in order to carry out the calculation.
The probability that at least 7 college students in a class of 30 receive a text message in the next hour.
The probability that a randomly selected college student in a class receives at least 7 text messages in the next hour.
The probability that a randomly selected college student takes less than 5 minutes to write three random text messages.
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