Explain the required probability for the normal distribution.
200 people were surveyed as well as asked to rate mayor Michael Bloomberg's effectiveness towards education. The rate scale is 1 (lowest) to 10 (highest). Mayor Bloomberg's average rating was 7.5 with a standard deviation of 2
1) Explain what is the percentage of people surveyed rated mayor Bloomberg from 5 to 7.5
2) Explain what the percentage of people surveyed is rated mayor Bloomberg from 7.5 or above
3) Explain what the percentage of people surveyed is rated mayor Bloomberg from 7.5 or below