Question

You check 20 batteries; 14 of the batteries do not have a charge. What is the experimental probability that the next battery you check does not have a charge?

a. 0.7; 49
b. 0.65; 46
c. 0.3; 21
d. 0.35; 25

Answer 1

The experimental probability that the next battery checked will not have a charge is 14 out of 20, which simplifies to 0.7 or 70%, corresponding to option 'a'.

Step-by-step explanation:

The question is asking for the experimental probability that the next battery checked will not have a charge, based on the results of checking 20 batteries from which 14 were found without a charge. To find the experimental probability, you divide the number of successful outcomes (batteries without a charge) by the total number of outcomes (total batteries checked). Therefore, the experimental probability is 14 out of 20, which can be reduced to 7 out of 10 or 0.7. The correct answer option, in this case, is 'a' which states an experimental probability of 0.7 and is mathematically represented as 49 when converting the probability to a percentage (70%) and multiplying by the total number of checked batteries (70).