a certain brand produces box with weight of 100 gr.the average weight of 20 samples equals to 102 gram. distribution of the weight of the boxes is 1.25. Conduct a test about the standart weight of the boxes. does the product still weight 100gram or heigher? Write the z value which you should use for comparison.

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Q: Ex. X = 400 Y = 700 Exr = 15, 000 Σε X2 = 16, 229 y2 = 50, 000

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: