The GMAC Insurance company reported that the mean score on the 2009 National Drivers Test was 76.6 with a standard deviation of 2.7 points. The test scores are approximately bell-shaped.

Answer Estimate the percentage of participants in the test who had scores between 68.5 and 84.7 points.

Answer andAnswer Between what two values will approximately 95% of the test scores lie? (Your values must be in increasing order.)