When Amanda plotted her data, the results closely resembled the standard normal curve. The data revealed a mean of 100 and a standard deviation of 10. Amanda can be confident that approximately 68 percent of the scores are between:

Question

Quizplus · Accepted Answer

According to the empirical rule for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean in either direction. One standard deviation below the mean of 100 is 90, and one standard deviation above the mean is 110. Therefore, Amanda can be confident that approximately 68 percent of the scores are between 90 and 110.

When Amanda Plotted Her Data, the Results Closely Resembled the Standard