Use both formula and probability distributions to answer each question. Then use a function in your calculator to check your answer. Make sure you always write down what you entered into your calculator.

Question 4

Two samples of adults were taken: In 2018, 1048 adults said they spent, on average, 9.79 hours on the internet each week with a standard deviation of 13.41. In 2020, a sample of 1018 said they spent, on average, 10.47 hours on the internet each week with a standard deviation of 14.52. Can you conclude that the mean time spent on the internet in 2020 is greater than that in 2018? (sig lev= 0.01)