Supposed you are asked to estimate the meannumber of hours that sixth graders from a local elementary school spends daily using digital devices.Six randomly selected students were interviewed, and their daily digital device usage (in hours) is shown below.Assume that digital device usage was found to be normally distributed.

Daily Usage

4, 3, 4, 2, 5, 6

1. What is the mean of this sample?
2. What is the standard deviation of this sample?
3. Use the data above to create a 95% confidence interval to estimate the mean digital device usage for all students at the school.