Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Probability, Exercise 2: Exercise 13.1

Draw a probability scale. Mark the event on the diagram:

A plant will flower: $80\%$

Draw a probability scale. Mark the event on the diagram:

Roshni will study maths at university: $\frac{9}{10}$

Draw a probability scale. Mark the event on the diagram:

The train will be late: $0.05$.

Suggest event that can have the following probability: 

$\frac{1}{10}$

Suggest event that can have the following probability: 

$50\%$

Suggest event that can have the following probability: 

$85\%$

Suggest event that can have the following probability: 

$100\%$

Sogand flips a coin. The probability that it lands with heads facing up is $50\%$.

Sogand flips the coin five times. She gets heads every time.

Look at these three statements:

$A:$ The probability that the next flip lands with heads facing up is $50\%$.

$B.$ the probability that the next flip shows heads is more than $50\%$.

$C.$ The probability that the next flip shows heads is less than $50\%$.

Which statement do you think is correct. Give a reason for your answer.