Probability - Probability Scale

  a - answer    s - solution    v - video    d - discussion

Question 1


Describe each of the following events as either Impossible, Unlikely, Even Chance, Likely or Certain

a) When throwing a coin, it will land heads up.a s v d

b) When rolling a normal dice, you will get a number less than $10$a s v d

c) When rolling a normal dice, you will get a number greater than $10$a s v d

d) When asking a stranger their favourite colour they say 'Red'a s v d

e) Asking someone whether they likely chocolate and their answer being 'Yes'a s v d

f) The gender of a baby being a girla s v d

g) Today you will do maths problemsa s v d

h) Picking a King from a shuffled pack of cards randomly.a s v d

i) It will rain tomorrowa s v d

j) Tomorrow it will snow in the Carribbeana s v d



Question 2


A spinner is spun with the letters A, B, C, D, E, F on it. The spinner is equally likely to fall on each. Describe each of the following events using the terms Impossible, Unlikely, Even Chance, Likely or Certain

a) It lands on a lettera s v d

b) It lands on a vowela s v d

c) It lands on A, B or Ca s v d

d) It lands on a consonanta s v d

e) It lands on a numbera s v d

f) It lands on one of the letters in the word ADAa s v d



Question 3


Place the following events on the following probability scale:



a) Event A: The sun will rise tomorrowa s v d

b) Event B: After throwing a coin, it lands tails upa s v d

c) Event C: Picking a number card randomly out of a deck of shuffled cards.a s v d

d) Event D: You will win the lottery tomorrowa s v d

e) Event E: The next person you see is a malea s v d

f) Event F: You will eat dinner tonighta s v d

g) Event G: Rolling a normal dice and getting an even numbera s v d

h) Event H: Picking two cards randomly out of a shuffled deck and neither of them being acesa s v d



Question 4


Place the following events on the following probability scale:


a) Event Z: In a bag of $2$ red balls and $2$ black balls, you pick out a red ball.a s v d

b) Event Y: In a bag of $10$ green balls and $5$ yellow balls, you pick out a yellow ball.a s v d

c) Event X: In a bag of $10$ green balls and $5$ yellow balls, you pick out a green ball.a s v d

d) Event W: In a bag of $16$ silver balls and $1$ gold ball, you pick out a silver ball.a s v d

e) Event V: In a bag of $16$ silver balls and $1$ gold ball, you pick out a red ball.a s v d

f) Event U: In a bag of $3$ white balls and $2$ black balls and $1$ green ball, you pick out anything that isn't a white ball.a s v d

g) Event T: In a bag of $3$ white balls and $2$ black balls and $1$ green ball, you pick out a ball.a s v d