Statistics Solutions

(Steps Shown) Julia jogs two miles per day, and has been doing so for several years.During the past year she has sometimes recorded her times for running the

Question: Julia jogs two miles per day, and has been doing so for several years.During the past year she has sometimes recorded her times for running the two miles. She has a sample of 91 of these times. For these 90 times the mean was \[\bar{x}\] = 15.6 minutes and the standard deviation was \[s\] = 1.8 minutes. Let \[\mu \] represent the mean jogging time for the entire year. Find a 95% confidence interval for \[\mu \] . Assume all statistical requirements are satisfied.

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