A teacher wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will be B’s and D’s, and the rest receive C’s. The scores are normally distributed with a mean of 78 and a standard deviation of 8. Find the mean, median, and mode and use the data to find the bottom cut-off for an A grade.

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A teacher wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will be B’s and D’s, and the rest receive C’s.

The scores are normally distributed with a mean of 78 and a standard deviation of 8.

Find the mean, median, and mode and use the data to find the bottom cut-off for an A grade.

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