Theoretical Or Experimental
Compound Events
Compound Events 2
Percent of a Whole
Percent
Change
Change
100
Jonny flipped a coin 150 times. He got tails 80 times. He says based on this work the probability of getting tails during a coin flip is 8/15. What kind of probability is this?
Experimental
100
True or False
If the probability being asked has the word "and" in it you add the probabilities
False
ex: Probability of rolling a 5 and then rolling an even number on a dice. (1/6) * (1/2) = 1/12
100
True or False
If the probability being asked has the word "or" in it you add the probabilities
True
ex: P(heads OR tails) 1/2 + 1/2 = 1
100
How do you have the percent if given the part and the whole?
(Part)/(Total)(100%)
100
True or False
With percent change you either add or subtract a percent of the origninal amount to find the new amount.
True
200
Susan has a coin in her hand, she says there are only two outcomes. Either the coin will land on heads or the coin will land on tails. Based on this she said the probability of getting tails when flipping the coin is 1/2. What kind of probability is this?
Theoretical
200
A package contains 4 blue m&ms and 7 green m&ms. What is the probability of randomly drawing a blue m&m, putting it back in the bag, and then randomly drawing another blue m&m?
4/11 * 4/11 = 16/121
200
There is a 50% chance that you will draw a black card from a deck of cards. If you put the first card back in the deck, there is a 23% chance you will draw a face card. What is the probability that you will first draw a black card and then draw a face card? Show your work.
1/2 * 23/100 =
23/200
200
Jimmy got 12 of the 15 points on the quiz. What percent will he get?
80%
200
You go to the mall to purchase a new backpack. The price tag reads $55 but you will also use a 20% coupon. What is the discount that the coupon gives you?
$11
300
If the coin is flipped 140 times, how many times would you predict that the coin lands on heads?
70
300
A package contains 4 blue m&ms and 7 green m&ms. What is the probability of randomly drawing a blue m&m, without replacing it back in the bag, and then randomly drawing another blue m&m?
4/11 * 3/10 =
12/110 =
6/55
300
There are 3 red candies, 4 green candies, and 2 yellow candies in a bag. A candy is drawn from the bag without replacement. Then, a second candy is drawn from the bag.
Which two events result in a probability of 1/12?
Either
Red - Red
or
Red - Yellow
300
Jonny got 18 of the 20 points on the quiz. What percent of the points did he earn?
90%
300
You go to the mall to purchase a new backpack. The price tag reads $55 but you will also use a 20% coupon. What is the sale price of the backpack?
$55 - $11
= $44
400
If the spinner spun 40 times how many times should it theoretically land on not purple?
30 times.
400
There are 10 red marbles, 5 blue marbles, and 3 green marbles in a bucket. What is the probability of drawing a red marble and then a green marble without replacement?
5/9 * 3/17 =
15/153
400
Delaney flipped a coin 16 times and spun a spinner 16 times. Her results are in the diagram to the right. What is the experimental probability that she flipped a tails and then spun blue on a spinner? Show your work.
7/16 * 4/16 =
28/256 =
7/64
400
Sara earned an 88% on a test and got 22 points. How many total points were possible on the test?
25 points
400
Shorts that regularly sell for $27 are now on sale for 40% off. What is the discount?
$10.80
500
Johnny spun the spinner 60 times. What is the experimental probability that the spinner will land on orange based on this data?
21/60 =
7/20
500
There are 10 red marbles, 5 blue marbles, and 3 green marbles in a bucket. What is the probability of drawing a red marble and then a green marble with replacement?
5/9 * 1/6 =
5/54
500
There are 3 red candies, 4 green candies, and 2 yellow candies in a bag. A candy is drawn from the bag without replacement. Then, a second candy is drawn from the bag.
What is the probability of drawing a green then a red then a yellow in that order?
4/9 * 3/8 * 2/7
= 24/504
= 3/16
500
Jerry got a 70% on his test he got 21 points on his test. How many points was the test worth?
30 points total in the test
500
Shorts that regularly sell for $27 are now on sale for 40% off. What is the sales price?
$16.20