Examine the complex number 3+2i. a: what is the real part of the complex number? b: what is the imaginary part of the complex number? select one answer for part a, and select one answer for part b.

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”?