Draw a line of best fit on the graph. (Please draw on the picture!!)

Based on your line, what is the likely test score of a student who does not study for the test?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?