Probabilities

The theoretical probability of rolling an even number on a dice.

• 30%

• 1/2

• 1/6

• 5/6

If I flip a coin 10 times how many times should I get heads?

• 1

• 10

• 3

• 5

A chance of getting a 2 when you roll a fair dice is

• 1/2

• 2/6

• 1/6

• 0.2

The chance of landing on green is

• 3/6

• 2/8

• 3/8

• 1/6

The chance of getting a Head when flipping a fair coin is 50/50. Peter flips his coin 10 times and he gets only two Heads. So the chance of getting Head is really 2 out of 10. Why?

• Because Peter was not lucky enough. It should be an even chance of getting Head/Tail in coin flipping

• Because what we predict is different to what actually happen

• Because when you flip the coin once, the chance of getting Head is 50/50. But when you flip the coin more than once, this chance changes.

• Because Peter only flips 10 times, if he flips 100 times. The probability is going to be 50/50

Experimental Probability is:

• What Will happen 

• What actually happens

• What should happen

• What I think Happens

Theoretical Probability is?

• What Should happen

• What does happen

• What Will Happen

• What I want to Happen

What is the probability of him not choosing a red rose?

A bag contains 9 green marbles, 5 yellow marbles and 6 red marbles.  You choose one marble.   What is the probability of selecting a green or red marble?  Do you add or multiply probabilities?

• Add

• Multiply

Kaylee has 1 red, 3 blue, 2 brown, 5 black, 1 purple, and 4 pairs of pink flip-flops in her closet. Assuming she always replaces them, what is the probability that she will choose a blue pair on Monday and a pink pair on Tuesday?

• 3/8

• 4/75

• 3/64

• 15/32