Candice is preparing for her final exam in Statistics. She knows she needs an 68 out of 100 to earn an A overall in the course. Her instructor provided the following information to the students.
- On the final, 200 students have taken it with a mean score of 60 and a standard deviation of 6. Assume the distribution of scores is bell-shaped. Calculate to see if a score of 68 is within one standard deviation of the mean.
A) Yes, 68 is the upper limit of one standard deviation from the mean.
B) Yes, the upper level of one standard deviation is 66.
C) Yes, 68 is greater than the 54, one standard deviation below the mean.
D) No, 68 is greater than the mean of 60.

Question

Quizplus · Accepted Answer

One standard deviation from the mean in either direction on the bell curve includes the scores from 54 (60 - 6) to 66 (60 + 6). A score of 68 is beyond this range, making it more than one standard deviation above the mean.

Candice Is Preparing for Her Final Exam in Statistics