Candice is preparing for her final exam in Statistics. She knows she needs an 80 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 72 and a standard deviation of 6. Assume the distribution of scores is bell-shaped. Calculate to see if a score of 80 is within one standard deviation of the mean.
A) Yes, 80 is the upper number of one standard deviation from the mean.
B) No, the upper level of one standard deviation is 78.
C) Yes, 80 is greater than the 66, one standard deviation below the mean.
D) No, 80 is greater than the mean of 72.

Question

Candice is preparing for her final exam in Statistics. She knows she needs an 80 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 72 and a standard deviation of 6. Assume the distribution of scores is bell-shaped. Calculate to see if a score of 80 is within one standard deviation of the mean.
A) Yes, 80 is the upper number of one standard deviation from the mean.
B) No, the upper level of one standard deviation is 78.
C) Yes, 80 is greater than the 66, one standard deviation below the mean.
D) No, 80 is greater than the mean of 72.

Quizplus · Accepted Answer

The upper level of one standard deviation from the mean is calculated as mean + 1 standard deviation = 72 + 6 = 78. Therefore, a score of 80 is outside one standard deviation from the mean.

Candice Is Preparing for Her Final Exam in Statistics