I would choose answer 2, since that answer is based on a same size consisting of more than 1 person, making it applicable to statistic analysis and have an input in the observational study. The other questions ask for one data point, which isn't statistical
Source: AP Statistics
It is pretty much all the way
Answer:
it is B
It must be crystalline and have an indefinite checmical compostion
Answer= 10.5
you have to cross multiply the fraction.
so 3 multiplied by 14 which is 42. and 4 multiplied by v, which is 4v.
you then divide by 4 on each of the sides.
which then is 42/4 which is 10.5
