A teacher collected data from a class of eighth grade students on whether or not they have a sister and whether or not they have a brother. The two-way table below shows the data collected.
A teacher collected data from a class of eighth grade students on whether or not they have a sister and whether or not they have a brother. The two-way table below shows the data collected.
Sister No Sister Total
Brother 5 12 17
No Brother 9 4 13
Total 14 16 30
Calculate the relative frequency of the data to determine which association the two-way table suggests.
A.
Those who have a brother tend not to have a sister.
B.
Those who do not have a brother tend not to have a sister.
C.
Those who have a brother tend to have a sister.
D.
None of the associations listed are correct.
