A gardener tracked the time (in units of minutes) spent watering plants for 88 randomly selected days. The recorded times were:12.5,13.2,14.0,12.8,13.6,11.9,13.3,12.612.5,13.2,14.0,12.8,13.6,11.9,13.3,12.6 Assume the population standard deviation is 3.53.5 minutes. Construct a 90%90\% confidence interval for the mean time spent watering plants per day.

(11.0,15.0)\left(11.0,15.0\right) minutes

(10.8,15.1)\left(10.8,15.1\right) minutes

(11.5,15.7)\left(11.5,15.7\right) minutes

(11.3,14.9)\left(11.3,14.9\right) minutes

A gardener tracked the time (in units of minutes) spent watering ...

Confidence Intervals for Population Mean: Videos & Practice Problems