I think it would be the second question!
The rise in temperature by 11 degrees Fahrenheit can be represented by the temperature change, ΔT = +11 °F. The temperature change is positive because the temperature increased as stated in the question. Moreover, the formula for temperature change is: ΔT = T_final - T_initial. This means that for this case, the final temperature is higher than the initial temperature.
Approximately 68% of a normal distribution lies within one standard deviation of the mean, so this corresponds to students with scores between

.
The answer to -7 +11 -6 + 8 =6