Since we are informed that the Girl Scout Troop started with 25 girls and at the end of the year party there were 31 girls. The percentage change will be:
= (31 - 25) / 25 × 100
= 6/25 × 100
= 24%
The error that Gabby made was that she used 31 as the base. This is expressed below:
First, use the random number table to generate the possible probabilities but only account the first four digits in order to get a value that is a percentage 35.85% 28.97% 90.12% 5.07% 20.43% The average is 36.09% There is a 36.09% probability that the light will be green when reaches the traffic light
