Independent + dependent events
36 pens in a box
12 is red and 24 is blue
What's the probability you get a blue?
24/36
The probability of rolling a 6 in a die
The probability of rolling a “5” when you throw a die is 1/6 because there is one “6” on a die
You roll a die ten times and get a six four of those times. What is the experimental probability of rolling a six?
40%
The theoretical probability of rolling an even number on a dice.
1/2
2+2 × 3
8
what the probability
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows an even number
1/4 or 0.25
Things that can't happen at the same time
What are mutually exclusive events?
A bag contains 3 green balls, 7 blue balls, and 8 red balls
what's the probability of getting 2 red balls if 2 balls are drawn
8/16
What is the probability of flipping a coin, getting tails?
1/2
63
216
A purse has four $5 bills and five $10 bills, and three $20 bills.
2 of them are being selected and not replaced.
What's the probability of getting a $5 bill then another $5 bill
4/12
The probability of a dice showing a 2 or 5
P(2 or 5) = P(2) + P(5)
= 1/6 + 1/6
= 2/6 = 1/3
The probability of a dice showing a 2 or 5 is 1/3
a spinner there is 10 red, 14 blue, 6 green
what is the probability you will fall on the green
6/30
A bag contains five 1 guilders, two 5 guilders, and four 25 cents. What is the probability of picking a 5 guilder coin?
5/11
800x50(456)
18240000
You flip a coin and then roll the die. The coin lands heads-up and the die shows a one.
Dependent or independent
Independent
If you roll one die, what is the probability of getting an odd number or a 4? Are the events inclusive or mutually exclusive?
Mutually exclusive
you have 28 blue balloons, 28 red, 45 green, and 6 purple.
what are the chances of you getting blue of 6 red pops.
28/101
What is Theoretical Probability?
The ratio of favorable outcomes to the total number of possible outcomes
Choose all the numbers that are NOT prime
22, 25, 12, 72
22, 25, 72
you have 8 shirts. 4 are blue 4 are green. You randomly take one Monday and one on Tuesday. what the chance you can get blue 2 days in a row
3/14 or 0.214
If you draw one card from a standard deck, what is the probability of drawing a 5 or a diamond?
16/52
Pink 11
Blue 10
Green 13
Yellow 16
What's the experimental probability of spinning the color blue?
1/5 or 20%
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
1/10
143 + 52
2769