4. Let A E Mn. Each of the following statements is equivalent to two of the other three except (a) The matrix A is product of elementary matrices. (b) The matrix A is nonsingular. (c) The linear system Ax = b has infinitely many solutions. (d) The matrix RREF(A) has n pivots.

Q: find az ond dz.

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Q: answers were wrong.

A: X Frequency 0 2 1 6 2 8 3 36 4 50 5 68 6 55 7 36 8 19 9 10 10 4

Q: Find R for part A and Part B

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A: Different combinations are considered under given conditions.

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A: Let take t^2 = z  Then.differentiate it ansd solve it as. Below

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A: Probability is the measure of the chance that an event is likely to happen. It is calculated by…