PLEASE HELP M A normal distribution curve, where x = 70 and σ = 15, was created by a teacher using her students’ grades. What information about their performances can be obtained by analyzing the curve?

Sample Response: By analyzing the curve, you can tell that the average, or mean, grade is 70. This is also the median of the grades, so we know that one half of the scores are less than or equal to 70, and the other half of the scores are greater than or equal to 70. The bulk of the scores are between 55 and 85.

Step-by-step explanation:

P(green diamond)= 1/12

P(a# card)= 4/12=1/3

P(blue card)= 3/12=1/4