probability

grading

import random
def sampleQuizzes():
        yes = 0.0
        for i in range(10000):
            midterm1 = random.randrange(50,81)
            midterm2 = random.randrange(60,91)
            finalExam = random.randrange(55,96)
            finalGrade = midterm1*0.25 + midterm2*0.25 + finalExam*0.50
            if finalGrade >= 70 and finalGrade <= 75:
                yes += 1.0
           
        return yes/10000