This task is about the likelihood of events with two coins.
Keita threw two coins in the air. Each time Keita threw the coins, she tallied how they landed.
| Outcome | Tally | Frequency |
|
Head - Head
Head - Tail
Tail - Head
Tail - Tail
|
 |
13
17 20 10 |
|
a) |
How many times did Keita throw the two coins? __________ |
| b) |
What proportion of Keita's throws had an outcome of ...
|
|
i)
ii)
|
two heads? __________
at least one head? __________
|
| c) |
Draw an 'X' on the scale below to show the probability of Keita throwing two tails, based on her data in the table above.
|
