on a mathematics test in high school, scores are normally distributed with a mean of 77 and a standard deviation of 16.8. A students is randomly selected.

A students??

To answer questions related to the randomly selected student, we can use the concept of the normal distribution. Given that the scores are normally distributed with a mean of 77 and a standard deviation of 16.8, we can find probabilities or make inferences using this information.

Now, let's address your question. Please provide more details or specify the question you would like to ask about the randomly selected student.