To find the range of data within two standard deviations of the mean in a normal distribution, you would typically use the formula:
- Lower Bound: Mean - 2(Standard Deviation)
- Upper Bound: Mean + 2(Standard Deviation)
Since the specific mean and standard deviation from the lines you mentioned (12 and 13 of the Normal Distribution calculator) are not provided in your question, I can't calculate the exact range. However, based on the options given, you would need to find the mean and standard deviation from the calculator and then plug those values into the formula above.
If you have the values of the mean and the standard deviation from the calculator, please provide them, and I can help you calculate the range or confirm which option is correct. Otherwise, you can use the information provided to determine the range based on the data from the calculator you mentioned.