Use a x2 test to test the claim that on given contingency table the row variable and the column variable are independent tests for adverse reactions to a new drug yielded the results given in the table at 0.05 significance lever test the claim that the treatment (drug or placebo) is independent of the reaction (whether or not headaches we’re experienced)

a) 32pie square meters

step-by-step explanation:

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.