SOLUTION: A researcher wishes to estimate that mean age of all runners who participate in the annual Vancouver marathon. A random sample of 36 participants indicated a mean age of 31.4 years
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Question 748185: A researcher wishes to estimate that mean age of all runners who participate in the annual Vancouver marathon. A random sample of 36 participants indicated a mean age of 31.4 years. It is known that the population standard deviation of ages is σ = 7.2 years.
Construct a 97% confidence interval for the population mean age.
Note: Express the confidence interval to 2 decimal places of accuracy. Answer by lynnlo(4176) (Show Source):
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