Can we say with 95 percent confidence that the mean is above 2.5?

The overall mean number of days in inpatient care per admitted patient is known to be normally distributed with a standard deviation of 2. A sample of six patients is taken, and they are kept in the hospital for the following number of days: 4, 2, 8, 7, 1, 5. Can we say with 95 percent confidence that the mean is above 2.5?

"Looking for a Similar Assignment? Order now and Get a Discount!