STATS/CHEM

posted by .

I get how to use the method of least squares to determine slope, intercept, uncertainties in slope and intercept of your graph and but am confused how to determine the error of mole percent stated in (ii)
The following are peak areas for chromatograms of isooctane standards
Peak area Mole percent isotane
0.352 1.09
0.803 1.78
1.08 2.60
1.38 3.03
1.75 4.01
(i)Use the method of least squares to find the slope, intercept, uncertainties in slope and intercept of your graph and give the equation of the line.
(ii) A peak area of 2.65 was obtained for an unknown sample of hydrocarbon mixture. Calculate the mole percent of isooctane in the mixture, error of the mole percent and the 95% confidence interval of the mole percent if the peak area was
(a) the result of a single measurement and
(b) the mean of four measurements
(c) comment on the difference in answers to (a) and (b)

Hope anyone can help me with this homework

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Slopes

    Given y = 2x – 4, choose the statement that accurately describes this line. The slope is 2 and the y intercept is 4. The slope is 2 and the y intercept is -4. The slope is 4 and the y intercept is 2. The slope is -4 and they y intercept …
  2. My Daughter Stacy needs help in math plz help!

    You have to find the x and y coordinates:(She doesn't get it and neither do I) 2x + y = 9 The question doesn't go with the equation. I suspect it is a plotting exercise Make a table x y Put in for x 0, 1, 4 Solve for each corresponding …
  3. Algerba

    Find slope and y-intercept of following equation y=-3 x -2 knowing the slope of intercept 5 formula is y=mx+b slope is m or -3 y=-3 or m (0) -2 m=slope 5 5 y-intercept = let x=o solve for y y=0-2 y=-2 You can tell by inspecting the …
  4. algebra

    Which of the following is not a step used when graphing the equation y = −x + 8 using the slope-intercept method?
  5. Math

    For the equation y = -6x, what is the slope and y intercept?
  6. Math

    For the equation y = -6x, what is the slope and y intercept?
  7. Is this right?

    I have to determine the slope and y- intercept of this equation then graph 4x=6y+9 so I ended up putting it in y-mx+b form and it was 6y=4x+9 so slope is 4x and y intercept is 6y?
  8. Pre-Calculus Questions

    Hi! Can someone help me with these? Thanks! 1.) Determine the slope and the y-intercept of the equation of the line passing through the points (-5, 3) and (1, -3). Write the equation of the line in slope intercept form. 2.) Determine
  9. Pre-Calculus

    help please Identify the slope and intercept of the following linear equation. y=3/7x-5 Slope: 3/7; intercept: 5 Slope: -5; intercept: 3/7 Slope: 5; intercept: 3/7 Slope: 3/7; intercept: -5
  10. Algebra 2

    Can someone help me with this equation please?

More Similar Questions