Abox contains 19 balls labeled 1 through 19. two balls are drawn in succession without replacement. if the second ball has a number 4 on it, what is the probability that the first ball had a smaller number on it? an even number on it?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.