Bag contains 50 marbles,10 of which are blue ,8 are red,20 are green ,and 12 are purple . marcie takes a ow marble out of the bag ,records the color and returns it to the bag how many red marbles should she expect after 500 trials

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before