If a student has a sibling, the likelihood that he also has a pet is given by 40%, the correct option is C.
What is Probability?
Probabilityis the measure of the likliness of an event to happen.
The probability has a range from 0 to 1, 0 denotes uncertainty and 1 indicates certainty.
The probabilities for the survey that asked students whether they have any siblings and pets is shown in the image.
The image has a relatve frequency table for the Probability.
The people that have Sibling and a pet is 0.3
Te people that have sibling and no pet is 0.45
The total is 0.75
The people that have no sibling and a pet is 0.15
The people that have no sibling and no pet is 0.1.
The total is 0.25
If a student has a sibling, the likelihood that he also has a pet is given by
= ( No. of student that have a sibling and a pet ) /( Total Students)
= 0.3 /0.75
= 0.4
or 40%
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