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According to Nielsen the average teenager sends 3 339 texts per

According to Nielsen, the average teenager sends 3,339 texts per month (CNN, October 15, 2010).

a. Find the probability that an average teenager sends more than 1,000 texts per week.

b. Find the probability that an average teenager sends fewer than 500 texts per week.

a. Find the probability that an average teenager sends more than 1,000 texts per week.

b. Find the probability that an average teenager sends fewer than 500 texts per week.

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