Hai nhóm sinh viên cùng học môn thống kê và kết quả thi kết thúc học phần như sau:+ Nhóm A: 1164;73, 2;10,9nxs===+ Nhóm B: 2268;76, 6;11, 2nys===Với mức ý nghĩa 5% có thểcho rằng kết quảthi trung bình của nhóm B cao hơn nhóm A hay không?

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

answer: ur v dumb

step-by-step explanation:

5/12, or 5: 12

step-by-step explanation:

step-by-step explanation:

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