The average number of minutes per week that teenagers spend texting is 250.0. Assume the standard deviation is 72.0 minutes. A random sample of 100 teenagers is taken. Find the probability that the mean number of minutes teenagers in this sample spend texting is less than 260.0.
The average number of minutes per week that teenagers spend texting is 250.0. Assume the standard deviation is 72.0 minutes. A random sample of 100 teenagers is taken. Find the probability that the mean number of minutes teenagers in this sample spend texting is less than 260.0.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Teenager spends texting, please show work and neat handwriting
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