Consalvi analyzed her students' final exam scores and found that they achieved a mean score of 80, and that a score of 82 is one standard deviation...

Ms. Consalvi analyzed her students' final exam scores and found that they achieved a mean score of 80, and that a score of 82 is one standard deviation from the mean.

Which of the following statements is/are true?

There may be more than one correct answer. Select all that apply.

• Approximately 99.7 percent of the students have a score between 78 and 82
• Approximately 68 percent of the students have a score between 80 and 82
• Approximately 99.7 percent of the students have a score between 74 and 86
• Approximately 68 percent of the students have a score between 78 and 82
• Approximately 95 percent of the students have a score between 76 and 80
• Approximately 95 percent of the students have a score between 76 and 84