A study of working conditions in Australian cities recorded the time and distance that people in various cities spend tr

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A study of working conditions in Australian cities recorded thetime and distance that people in various cities spend travelling towork each day. The following output was obtained from a sample of25 people who work in Melbourne:
n mean standarddeviation
Time (minutes) 25 35.15. 8.65
Distance (km) 25 15.85 5.25
Assuming travel distances are known to follow a normaldistribution, calculate a 95% confidence interval to estimate theaverage travel distance for all people who work in Melbourne.
Select one:
a. (13.79, 17.91)
b. (15.42, 16.28)
c. none of these options
d. (14.80, 16.90)
e. (13.68, 18.02)