Final answer:
The probability of rolling a sum of 11 on a standard pair of six-sided dice is 1/18 or approximately 0.055.
Step-by-step explanation:
To find the probability of rolling a sum of 11 on a standard pair of six-sided dice, we need to determine the number of favorable outcomes and divide it by the total number of possible outcomes.
There are two ways to roll an 11: rolling a 5 on the first die and a 6 on the second die, or rolling a 6 on the first die and a 5 on the second die.
The total number of possible outcomes when rolling two six-sided dice is 6 x 6 = 36.
Thus, the probability of rolling a sum of 11 is 2/36, which can be simplified to 1/18 or approximately 0.055 rounded to three decimal places.