zackbill
contestada

30 points
There are four sixth graders and seven seventh graders in Elsa's chess club. Two members of the club will be chosen at random to attend a tournament between several other chess clubs. Elsa is using simulation to determine the experimental probability of randomly selecting two sixth graders. So, she places four red discs (to represent the sixth graders) and seven blue discs (to represent the seventh graders) in a bag. She randomly selects one disc from the bag, records the color, keeps the disc out, selects another disc and records it, and then returns both discs to the bag. Elsa does this twenty-five times. Her results are shown in the table below.

b, b b, r b, r b, b r, b
b, r b, b b, r b, r r, b
r, b r, r b, r r, b b, r
b, b r, r b, r r, r r, b
b, b r, r b, b r, r b, r
Based on Elsa's results, what is the experimental probability of two sixth graders being randomly selected? Express your answer as a percent, rounded to the nearest whole number.
a0%

Respuesta :

katiefish05p5lgsw

24.4%

hope i helped

have a nice day

Using it's concept, it is found that there is a 12% experimental probability of two sixth graders being randomly selected.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

For an experimental probability, these number of outcomes are taken from previous trials.

In this problem, there were 25 experiments, and 3 of them resulted in (r,r), that is, two sixth graders being taken, hence the probability is given by:

p = 3/25 = 0.12 = 12%.

More can be learned about probabilities at https://brainly.com/question/14398287

#SPJ2

Otras preguntas