The National Bank of Lincoln is trying to determine the number of tellers available during the lunch rush on Fridays. The bank has collected data on the number of people who entered the bank during the last 3 months on Friday from 11 A.M. to 1 P.M. Using the data below, find point estimates of the mean and standard deviation of the population from which the sample was drawn.
| 242 | 275 | 289 | 306 | 242 | 385 | 279 | 245 | 269 | 305 | 294 | 328 |
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