Suppose that someone claims that the average time per day that Americans spend on social media is 2.3hrs and that we know that the population standard deviation of how long Americans spend on social media per day is 0.8hrs. Suppose also that we draw a sample of 80 U.S. citizens from the overall population and that this sample has a mean of 2.2hrs

what would the value of our z-statistic be? using the Standard Normal Table, what would the p-value of our z-statistic be? Use your answer to Question 9 [ANSWER: -1.12]