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Example 6.10 from Statistics, 6.2 Using the Normal Distribution
b. Determine the probability that a randomly selected smartphone user in the age range 13 to 55+ is at most 50.8 years old.
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
b. normalcdf(–1099,50.8,36.9,13.9) = 0.8413
How did it go?