I'm doing this math test and I have a border line A on my grade I need to make sure I don't lower my grade to a B, so any help is appreciated. Thanks!
7. The probability of winning a game is 25%. How many times should you expect to win if you play 20 times?
A. 7 times
B. 10 times
C. 2 times
D. 5 times
I have no idea how to solve this one ^^
10. The spinner is divided into equal parts. Use a tree diagram to find the probability that the spinner will land on a consonant both times if the spinner is spun twice.
The Spinner is divided into 3 parts which have the following letters on them
(N, E, U)
A. 1/9 ***
B. 1/3
C. 5/9
D. 3/4
13. Which events are not independent?
A. You draw two colored marbles without replacement and get one red and one blue. ***
B. You pull a green tile from a bag of tiles, return it, and then pull a yellow tile.
C. You toss two coins and get one head, one tail.
D. You choose two different ice cream flavors for a cone.
14. If two coins are tossed, what is the probability that the first coin will show heads and the second coin will show tails?
A. 1/2 ***
B. 1/4
C. 1/8
D. 1/16
My answer ***
I got a 93% on my test !! Thanks for the help again
7. D
Yes, you should win about 1/4 of the games :)
14 has 4 possibles
h h
h t
t h
t t
only one of those works