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   None Used Only Facebook, not Snapchat Only Snapchat, not Facebook Both Facebook and Snapchat Total...

   None Used Only Facebook, not Snapchat Only Snapchat, not Facebook Both Facebook and Snapchat Total
Female 6 4 4 12 26
Male 4 5 7 8 24
Total 10 9 11 20 50
  • Use a normal approximation to the binomial distribution (with mean and std. dev. calculated based on your data) and compute the following
    1. in a sample of 40, the probability that at least 15 have used both Facebook and Snapchat (see above table)
    2. Don't forget to correct for continuity.
Math   Statistics-And-Probability   
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