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katherineweightman
01.12.2019 •
Mathematics
What are the slope and y-intercept of the line described by the graph
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Ответ:
Ответ:
We assume that each grid line on the graph represents 1 unit.
The y-intercept is 5.
The slope is 2/4 = 1/2
Ответ:
Step-by-step explanation:
From the given information:
The mean of the readings is:![=\dfrac{175+104+164+193+131+189+155+133+151+ 176}{10}](/tpl/images/1385/1618/d3d13.png)
= 157.1
The standard deviation (SD) can be computed by using the expression:
Standard deviation = 28.195
∴
FOr the EDTA complexes;
The signal detection limit = (3*SD) +![y_{blanks}](/tpl/images/1385/1618/81731.png)
= (3*28.195) + 50
= 84.585 + 50
= 134.585
We need to point out that the value of the calibration curve given is too vague and it should be (1.75 x 10^9 M^-1) as oppose to (1.75 x 10^-9 M^-1)
The concentration of detection limit is:
The lower limit of quantification is: