1.One-sample t-test.Attention span is the time in minute that a person can focus on a task. The longer the attention span, the better able to remain absorbed in a particular activity without distraction. In most case a normal attention span for young adults is = 20 minutes. A neuropsychologist measures attention span for a sample of young adults under online learning during Covid 19 pandemic. For the following data, indicate whether attention span of young adults under online learning during Covid 19 pandemic is significantly different from the general population.Test with ?= .05.

DATA:14, 10, 12, 13, 10, 9, 11, 15, 8

a.Conduct a complete hypothesis test

b.Construct a 99% confidence interval for the difference of attention span in minute.

c.Give a full write up of your results. Make sure to include the mean and standard deviation of the sample.