question archive The heights of European 13-year-old boys can be approximated by a normal model with mean ? of 64
The heights of European 13-year-old boys can be approximated by a normal model with mean ? of 64
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The heights of European 13-year-old boys can be approximated by a normal model with mean ? of 64.1 inches and standard deviation ? of 2.51 inches.Question 1. What is the probability that a randomly selected 13-year-old boy from Europe is taller than 65.9 inches? (use 4 decimal places in your answer)Question 2. A random sample of 4 European 13-year-old boys is selected. What is the probability that the sample mean height x is greater than 65.9 inches? (use 4 decimal places in your answer)Question 3. A random sample of 9 European 13-year-old boys is selected. What is the probability that the sample mean height x is greater than 65.9 inches?
