Riley has 10 dollars in her piggy bank. Her parents deposit 3 dollars every week into her piggy bank every week. How much money does riley have after 5 weeks? Use W to represent the number of weeks and t to represent the total amount Mark has after any number of weeks.

Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?

Which situation is an example of an observational study?