Answer: The experimental probability is 70 %
Step-by-step explanation:
According to the given question have to find that the experimental probability that a 10th-grade student chosen at random has at least one, but no more than two, siblings
As we know that,
[tex]Probability = \frac{number of favourable outcomes}{total possible outcomes}[/tex]
If 10th-grade student chosen at random has at least one, but no more than two, siblings
Therefore, there can be one or two siblings
Such that, the total number of such students [tex]=18+10=28[/tex]
Now, number of favorable outcomes =28 and total number of students
[tex]=4+18+10+8=40[/tex]
Now,
[tex]Probability = \frac{number of favourable outcomes}{total possible outcomes}[/tex]
[tex]Probability = \frac{28}{40}\times 100=\frac{280}{4}=70%[/tex] %
