Astudy of two independent normal samples, each of sizen, is being planned.
assume that the two distributions have the same variance, σ2: n(μx,σ2) and (μy,σ2).
the investigators want to know what should be used so that the following is a 90%confidence interval for

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation:

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation: