A set of exam scores is normally distributed with a mean =72 and a standard deviation= 6. Use the Empirical Rule for the following statements. Indicate which ones are true.

Question

(More than one answer)

1. 68% of the scores are between 64 and 74.
2. 68% of the scores are between 66 and 78.
3. 95% of the scores are between 60 and 84.
4. 99.7 of the scores are between 50 and 90.
5. 99.7% of the scores are between 56 and 92.

Answer 1

68% are betweem 66 and 78 TRUE

95% between 60 and 84 TRUE

the rest are FALSE