Jorel's E-50:#4

n) If you flip a coin 150 times, about how many times would you expect to get heads?

ans: 75 150/2=75
2 is the T.P.O. so getting a heads should have 50%chance.

c) The letters a, e, i, o, u, and y are vowels. If one letter of the alphabet is chosen randomly, what is the probability it is a vowel?

ans: 6/26 or 3/13

k) If you randomlyu pick a date in April, how many equally likely outcomes are there?

ans: 30
There are 30 days in April so the total possible outcome is 30.

p) A magician asked you to pick a card, any card, from a standard deck of 52 cards. What is the probability of picking an ace?

ans: 4/52 or 1/17
There are 4 Ace in the standard deck so the P.O. is 4/52 or 1/13 .