For this problem, assume Gwen and Harry have 6 types of cones and 13 flavors of ice cream. (1) In how many different ways can your order one cone and two scoops of ice cream? (2) In how many different ways can your order one cone and two scoops of ice cream which are not the same flavor?

Andie has a blue sweater, a red sweater, and a purple sweater. She hasa white shirt and a tan shirt. How many different ways can she wear asweater and a shirt together?

Again it is related to my trip to Vancouver: Fly to Vancouver and to have a vacation is not a cheap trip. I would like to know the average USD amount two people (a couple) spend, the total amount, including Airfares, Hotel, Car Rental, Meals, and all other expenses. So again, I randomly ask n 93 couples of tourists in the Airport: how much money each couple spent in the whole trip since they, like us, are ready to fly back home. I then put each individual couple's $ amount into my Excel sheet in one column. I actually calculated the sample mean = 2,873 and sample Standard Deviation = 222, assume I want a 95% confidence interval.  Tell me the lower confidence level with 2 decimals (Dollar amount), ex. if the answer is $1256.786, write 1256.79.    Tip: Use the template you created following my video.

Let's say you went out for ice cream. The store had 8 different flavors, and you wanted a triple-decker ice cream cone. How many different triple-decker ice cream cones are possible at this store, assuming that you pick 3 different flavors? (Assume the order of the scoops does not matter.)