Two studies we’re completed in Florida. One study in northern Florida involved 2,000 patients;64% of them experienced flulike symptoms during the month of December. The other study, in southern Florida, involved 3,000 patients;54% of them experienced flulike symptoms during the same month. Which study has the smallest margin of error for a 95% confidence interval?

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step-by-step explanation:

the orientation of the parabolas can easily be found by analysing the power of x and y and their signs. if x is squared , parabola opens up and also if its coefficient is negative it opens down. if y is squared , the parabola opens right and also if its coefficient is negative it opens left. however in order to do the above analysis our equation must be in standard form .

our parabola is

which is not standard form of any parabola . hence we square on both hand side and convert it into standard form.

hence we see that x is squared and its coefficient is non negative . there for it opens up.

60%