3. Download the Games on Kickstarter data set that you used earlier in the semester. Recall that this data set is a sample of boardgame projects. Refresh your memory regarding the TIME variable. Our goal is to create a 95% confidence interval for the average playing time of all boardgame projects. a. First, you'll need to calculate the sample mean, sample standard deviation, and the number of observations for the TIME variable. (You learned how to do this in Lab Activity 4. Be certain to calculate the number of observations - don't simply look at the number of rows.) b. Enter these values into your worksheet to calculate the margin of error and confidence limits for a 95% confidence interval. When entering the values of the mean and standard deviation, be certain to keep at least 5 decimal places. Record the margin of error and the confidence limits rounding your answers to 3 decimals