The data in the following table were obtained during a colorimetric determination of glucose in…

The data in the following table were obtained during a
colorimetric determination of glucose in blood serum.

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(a) Assuming a linear relationship, find the least-squares estimates
of the slope and intercept.

(b) Use the LINEST function in Excel to find the standard
deviations of the slope and intercept.15 What is the standard error
of the estimate?

(c) Determine the 95% confidence intervals for the slope and
intercept.

(d) A serum sample gave an absorbance of 0.350. Find the
glucose concentration and its standard deviation.

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