Mary and Jane both took PSY230 last semester but they were in two different sections taught by different professors. Mary's class had a mean grade of 83 points with a standard deviation of 5 points while Jane's class had a mean grade of 85 points with a standard deviation of 10 points. Both Mary and Jane earned 88 points. Who did better in class? (Hint: We want to know Mary's and Jane's positions in the grade distributions of their respective classes.)

For a school newspaper article, cienna conducted a survey to find out students’ favorite subjects. she polled all the students in mrs. lopez’s advanced dance class. why is her data likely to be skewed? honors dance students are more likely to enjoy dance than students in the general population, so dance may be overrepresented. cienna should have interviewed all the students in the school to get more accurate data. honors dance students are more likely to enjoy dance than students in the general population, so dance will be underrepresented. cienna should have interviewed only every other student in the class to avoid having too many people.

The system of equations graphed below has how many solutions? y = 2x + 2

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)