Suppose you select a random sample of 100 college students and find that they spend 20 hours per week on social media with a standard deviation of 3 hours per week.

Calculate the standard error of the mean.(3 points)

Calculate the margin of error assuming a 95% confidence level. (3 points)

Calculate a 95% confidence interval for the mean. (3 points)

Interpret the confidence interval you have calculated. (1 point)