Sprint would like to investigate if men and women differ in how many minutes they talk on their cell phones per month. Assume the population variances are not equal. The data is below. Give the lower limit for a 99% confidence interval for the difference. You should get the pieces needed for this confidence interval from the Data Analysis Toolpak in Excel. Round your answer to two decimal places. Men: 314 492 324 803 288 476 561 370 295 525 299 317 319 625 367 373 207 263 333 367