For a normal curve with mean 5 and standard deviation 7, which of the following parts of the normal curve will have an area of approximately $68 \%$ ?
A) from 1.5 to 8.5
B) from -2 to 12
C) from 5 to 19
D) from -9 to 19

Question

Quizplus · Accepted Answer

For a normal distribution, approximately 68% of the data falls within one standard deviation of the mean. Here, the mean is 5 and the standard deviation is 7, so one standard deviation from the mean is from -2 (5-7) to 12 (5+7).

For a Normal Curve with Mean 5 and Standard Deviation 68%68 \%68%

For a Normal Curve with Mean 5 and Standard Deviation $68 \%$