I need some guidance for the following question:
A researcher wishes to estimate the 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 sigma=7.2 years.
Construct a 97% confidence interval for the population mean age.
Note: express the confidence interval to 2 decimal places of accuracy.© BrainMass Inc. brainmass.com June 4, 2020, 12:57 am ad1c9bdddf
This solution goes over how to construct a 97% confidence interval for annual Vancouver marathon runners.