5

MaiingsReviewViewHelpEquationy e Vx {()} sinb hadtion Srupt Radical Integral Large Brackel Function Operator ' ShunineCLUnTu <Same researchers used isotopes...

Question

MaiingsReviewViewHelpEquationy e Vx {()} sinb hadtion Srupt Radical Integral Large Brackel Function Operator ' ShunineCLUnTu <Same researchers used isotopes to determine the history of some sediments in lakes and estuaries, and to verify this method, the reference or standard PO?#substance known to have octivity and copocity of 77.50 decomposed / minute was analysed, and their results were as they Bne the following table:77.09 75.37 72.42 76.84 77.8478.03 74.96 77.54 76.09 81.12Do the re

Maiings Review View Help Equation y e Vx {()} sinb hadtion Srupt Radical Integral Large Brackel Function Operator ' Shunine CLUnTu < Same researchers used isotopes to determine the history of some sediments in lakes and estuaries, and to verify this method, the reference or standard PO?#substance known to have octivity and copocity of 77.50 decomposed / minute was analysed, and their results were as they Bne the following table: 77.09 75.37 72.42 76.84 77.84 78.03 74.96 77.54 76.09 81.12 Do the results of the researchers agree with the true value within the limits of confidence90%? Explain your answer using the test with explanation: B- The value 81.12 appears odd compared to the rest of the other values Explain whether it approved or excluded in the calculations ot 95% confidence limits? And why 2 A farmer wanted to check the quality of the fertilizer used on his farm, s0 he decided to examine somple of fertilizer (the fertilizer mainly contains ammonium sulfate} to check the where ne took sample of fertilizer whose mass was 0.517g amount of sulfate present in of testing, if he asked you to examine the sample, explain with explanation for the purpose The mechanism and steps that can be followed vitro determine the amount 0f Wnot sulfate ion present in the EMP sample. 3 If you have the following solutions containing ions added CrOC?-(Ksp-Lzx 10-12), Br-(ksp-5.Ox 10 ICl (ksp-1.810-10} Ifa silver ion Arrange the negotive ons ascending order according to the precipitation of the silver Ag on;



Answers

Please do the following. (a) Draw a scatter diagram displaying the data. (b) Verify the given sums $\Sigma x, \Sigma y, \Sigma x^{2}, \Sigma y^{2},$ and $\Sigma x y$ and the value of the sample correlation coefficient $r$. (c) Find $\bar{x}, \bar{y}, a,$ and $b .$ Then find the equation of the least-squares line $\hat{y}=a+b x$. (d) Graph the least-squares line on your scatter diagram. Be sure to use the point $(\bar{x}, \bar{y})$ as one of the points on the line. (e) Interpretation Find the value of the coefficient of determination $r^{2} .$ What percentage of the variation in $y$ can be explained by the corresponding variation in $x$ and the least-squares line? What percentage is unexplained? Answers may vary slightly due to rounding. Data for this problem are based on information taken from Prehistoric New Mexico: Background for Survey (by D. E. Stuart and R. P. Gauthier, University of New Mexico Press). It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let $x$ be the elevation (in thousands of feet) of an archaeological site in the southwestern United States. Let $y$ be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. The following data were obtained for a collection of archaeological sites in New Mexico: $$\begin{array}{c|ccccc}\hline x & 5.25 & 5.75 & 6.25 & 6.75 & 7.25 \\\hline y & 19 & 13 & 33 & 37 & 62 \\\hline\end{array}$$ Complete parts (a) through (e), given $\Sigma x=31.25, \Sigma y=164, \Sigma x^{2}=197.813, \Sigma y^{2}=6832, \Sigma x y=1080$ and $r \approx 0.913$. (f) At an archaeological site with elevation 6.5 (thousand feet), what does the least-squares equation forecast for $y=$ percentage of culturally unidentified artifacts?

Were given the set of data points listed at the top of this whiteboard X fly. And we want to use these data points to answer the following questions. A through F. Starting off with part A on the left, we want to produce a scatter plot of these data points. I've already included the scatter plot. As you can see where the data points X. Y are demarcated by the black crosses or exits next to the right and part B. We want to compute the sum is relevant to the state to as well as the Pearson correlation coefficient. R The sums are given by following the forms exactly. So some access to some of the X values. Some why is some of the individual Y values and so on. To compute are we use the following formula which takes us input, our sample size and and the Sun is just computed. This gives our equals .9126. Next below. In parts you want to find the equation of the line of best fit which requires finding these parameters first are simple mean X bar and a sample mean Y bar are given by the sum of our X values about it by n 6.25 And some of our Y values over M 32.8. Yeah, we can find the parameters for our best fit. Line being a. As follows. The slope B is given by the equation here, which takes us input and the sample size and the sums we found above Plugging In. We get the equal 22 and then plugging in. Ry bar be an X bar to our A equation on the right gives us intercept negative 104.7. This means we have equation for the line of best fit why hat equals negative 104.7 plus 22 X. Next part Do we want to return to the scatter plot on the left and graph ry hat. Doing so we want to make sure we include our X. Men and women, which looks like this next in the bottom right part. You want to calculate? The coefficient of determination are square and interpret its meaning. This is simply the square of the correlation coefficient 0.83 to eight. We interpret this to mean that roughly 83 of the variation of the data can be explained by the corresponding variation and excellently squares line 17 of the data accordingly cannot be explained by this. Finally, in part, after the bottom, we predict y where x equals 6.5 Plugging into our white hat, we obtain 38.3.

So Chevy Jebbie Shelves rule is 100%. Are 100 times 1 -1 of her case squared percent of the data values is within K standard deviations where K is greater than one. So our solution is the first time the Z score, which is x minus mu divided by sigma. Ah this is equal to 17.28 -14, divided by 0.4. This equals 8.2. So using Chevy chiefs inequality or sorry, the rule, we'll just plug that in 100 times one minus 1/8 10.2 squared and we get approximately mhm 98 51%. With the other weights are at least the 17 oz.

So in this question we have to equations going on. So first we start with the potassium biotech solution because all of a certain mass of potassium Io date provides the rd high on In water to make 125 ml of solution. Then the following reaction takes place an acid so we end up getting the I. Three negative ions from this. Then the resulting solution is diluted to exactly 250 ml flash. So from this information we can find the polarity of the three negative solution used in the operation. So the total volume it was diluted to was 250. So we know the mass of the potassium i. o. d. That was serious. We can use the molar mass To convert two moles of testing. Then in one mole of potassium Ohio date we have one wall of bio data From the chemical reaction. We see that one mole of today I on give us three moles of So we can use the mole ratio to convert two moles of hydro negative, then divide by the total volume it was diluted to in leaders. So if we calculate this, our final answer has three reasons configures. And we end up getting the polarity of that solution. Now for the next part we want to find how many grams of ammonia feel sulfate in the were present in the fertilizer sample. So We're told the total mass of the fertilizer which is .2180 g. Then we are told the titillation required a certain volume of the I. Three negative solution. So now we can find the mass of the monium philosophic doesn't know the volume and more clarity of. So we're going to be looking at the second reaction here. So we're taking the polarity that we just calculated a multiplied by the volume of a solution that was yours in leaders. And then we are going to convert from moles of the I. Three negative moles of sodium, two moles of the S 203 negative ions. So we can see That from the balanced chemical reaction. one mole of either negative reaction to the deal Salt Lake. Yeah, so we're going to use that mole ratio to revert from bolton two moles of what we're looking for. So now that we have the molds of feel sulfate. We know that in one mole of the ammonium, feel self faith. We have one more of the steel self the island. You can see how There is no subject on that. So it's 1-1 ratio. So then we would need to convert the moles of the ammonium sulfate too massive yourself Using the molar mass. So during this conversion we end up with the mass of ammonia deal salty for the last part. We want to know what percentage by mass of fertilizer is the ammonium salt. So we have the amount of money feel sulfate. That was calculated from B. Divide that by the total mass of fertilizers and multiply that by one mhm. And then you're able to get the percent by mass of this fertilizer. That is the ammonia in the assault.

When this question. Yeah we're going to find the polarity of the carrier solution used in this situation. So we're given the massive potassium IO date that was originally added and dissolved to walk into the water and then this solution was acidified in order to form I three negative ion. And the total volume that this was diluted to 1.250 leaders. So we're going to start with the mass of the potassium I. O. Data use the molar mass of testing wild age or two most testing then use the low ratio from that's kind of reaction. You convert from the moles of sodium ion two moles of I. Three and also the potassium IO day contains one mole of I. O. D. I. On. So therefore we can also include that in our calculation. So now that we could convert the I. O. Day I on too high three negative ion. We just divide that by the total volume of solution and leaders and they get more clarity. Then we want to know what the mass of the ammonium sulphate in the fertilizer sample is. So we're told the volume of the I. Three negative solution that is required to fully titrate the ammonium sulphate in the fertilizer. So we're going to take the polarity that we calculated and step A and then we're multiplying by the volume of that solution that we used to titrate the ammonia theo sulfate from the balanced chemical reaction. We see that one mole of I three negative reacts with two moles. The assault there I So we can use that mole ratio to convert two moles of yourself They are. Then we can see from the formula for ammonium sulfate and ammonium philosophic, One mole of theosophy ion, so the mole ratio is 1 to 1. And we're able to convert from bowls of theus sulfite ion, two moles of ammonia philosophic. Then use the molar mass, pneumonia. Feel selfish, very mass of philosophic. Then we want to know what percentage of the fertilizer sample is the emollient feel salty. Take the mass that we calculated from being divided by the mass of the total sample. They multiply this by 100 in order to find the percentage of this sample that is.


Similar Solved Questions

1 answers
Are the polynomials p1 (t) = -6t2+9t-3, Pe(t) = t2+5t-6,pa(t) = t2_8t+7 linearly independent? If not, write one as & linear combination of the others
Are the polynomials p1 (t) = -6t2+9t-3, Pe(t) = t2+5t-6,pa(t) = t2_8t+7 linearly independent? If not, write one as & linear combination of the others...
5 answers
Solid is bounded above by a portion of the hemisphere 32 And below by the cone 22 + y with <0 and y > 0 _ Part a: Express the volume of the solid as a triple integral involving €, y and 2. Part b: Express the volume of the solid as a triple integral in cylindrical coordinates.
solid is bounded above by a portion of the hemisphere 32 And below by the cone 22 + y with <0 and y > 0 _ Part a: Express the volume of the solid as a triple integral involving €, y and 2. Part b: Express the volume of the solid as a triple integral in cylindrical coordinates....
5 answers
Problem 2. (10 points total) LetT = LA and W is a T-cyclic subspace of R? generated by e. (a)(5 points) Find a basis for W . (6)(5 points) Compute the characteristic polynomial of Tw
Problem 2. (10 points total) Let T = LA and W is a T-cyclic subspace of R? generated by e. (a)(5 points) Find a basis for W . (6)(5 points) Compute the characteristic polynomial of Tw...
5 answers
[2 -x if x s0 f(x) = (12 pts) For the given function 31 - 4,if x > 0 determine the following a.) Sketch the graph lim f (x)lim f(x)lim f (x)Is this function continuous, if not where is it discontinuous?
[2 -x if x s0 f(x) = (12 pts) For the given function 31 - 4,if x > 0 determine the following a.) Sketch the graph lim f (x) lim f(x) lim f (x) Is this function continuous, if not where is it discontinuous?...
5 answers
Uppet (overnara IVH vou (nina [ne Weeara 3 Aldues rcpreseni 3 E 9990 9266 conndent 1 BBUNDERSTATIS concqums V propatton qiqits il Dalksues 8 il proportion 1 1 Ji calcuuto introvems Exolal places that p that p / 1 SLT Hpproximate , Interval Ui 1 1SINIOd [ BBUNDERSTAT12 4.001pall-1MY NOTES2
uppet (overnara IVH vou (nina [ne Weeara 3 Aldues rcpreseni 3 E 9990 9266 conndent 1 BBUNDERSTATIS concqums V propatton qiqits il Dalksues 8 il proportion 1 1 Ji calcuuto introvems Exolal places that p that p / 1 SLT Hpproximate , Interval Ui 1 1 SINIOd [ BBUNDERSTAT12 4.001 pall- 1 MY NOTES 2...
5 answers
Use 4 4 Jiagram 9 Solve 4 1
Use 4 4 Jiagram 9 Solve 4 1...
5 answers
8 = (4)x '€ = (O)x :D1 (z<u) 3k- Uv + (&-u)xg (1-u)xg = (u)x :&8
8 = (4)x '€ = (O)x :D1 (z<u) 3k- Uv + (&-u)xg (1-u)xg = (u)x :&8...
5 answers
Detumin ~ hellen xlu Sedna a$ 8i4 djnera 0T Lmeraln Cohra #ieA tbelimib: I 34-(1.0002) h
Detumin ~ hellen xlu Sedna a$ 8i4 djnera 0T Lmeraln Cohra #ieA tbelimib: I 34-(1.0002) h...
5 answers
Dufultrafcour Remaining ~Eason_ Reason tnousanou 1 Fthyi broride Ethya Ethyl 5 1 Ethylbromide /2 OCils 1 1 Droinidr 1 0 V Ju 0} Dauedwo) dnarume? 8 Vuat FLt= Tnid: 1 5
dufultrafcour Remaining ~Eason_ Reason tnousanou 1 Fthyi broride Ethya Ethyl 5 1 Ethylbromide /2 OCils 1 1 Droinidr 1 0 V Ju 0} Dauedwo) dnarume? 8 Vuat FLt= Tnid: 1 5...
5 answers
Use the mn Rule to find the number.There are three groups of distinctly different items, 4 in the first group, 7 in the second, and 3 in the third. If you select one item from each group, how many different triplets can you form?
Use the mn Rule to find the number. There are three groups of distinctly different items, 4 in the first group, 7 in the second, and 3 in the third. If you select one item from each group, how many different triplets can you form?...
5 answers
[unrrt IoOucuianTuainttTCLO_IIHmple afale I00 ,elected trom ona Fonulation ha EEninnit antl 4 Lmnle (mtataustlc [@lr equllty aftne nnpuletlon prooor Llont Fulalletovesrion orevnls changesWnka AnetttndKowng
[unrrt Io Oucuian Tuaintt TCLO_II Hmple afale I00 ,elected trom ona Fonulation ha EEninnit antl 4 Lmnle (mtataustlc [@lr equllty aftne nnpuletlon prooor Llont Fulallet ovesrion orevnls changes Wnka Anett tnd Kowng...
5 answers
1. why are Athletes are told to eat carbohydrates before competitions ?2.what are some of the reasons why Humidity effects comfort?
1. why are Athletes are told to eat carbohydrates before competitions ? 2.what are some of the reasons why Humidity effects comfort?...
5 answers
Find the area of the parallelogram with vertices A(-3, 0), B(-1, 5) , C(7, 4), and D(5, -1).
Find the area of the parallelogram with vertices A(-3, 0), B(-1, 5) , C(7, 4), and D(5, -1)....
5 answers
Find a polynomial ol degree 3 that has zeros 1_ ~4,2 and satisfies f(-1) = 8
Find a polynomial ol degree 3 that has zeros 1_ ~4,2 and satisfies f(-1) = 8...
5 answers
Ootcuj Corjjce th2 earciant.; 1 32 1
Ootcuj Corjjce th2 earciant. ; 1 32 1...
5 answers
To qualify for letter sorting, applicants are given a speedreading test. The scores are normally distributed with a mean of 50and a standard deviation of 4.(a) What is the probability that a randomly selected applicanthas a score between 55 and 60?(b) What is the probability that a randomly selected group of 18applicants scores more than 52 on average?
To qualify for letter sorting, applicants are given a speed reading test. The scores are normally distributed with a mean of 50 and a standard deviation of 4. (a) What is the probability that a randomly selected applicant has a score between 55 and 60? (b) What is the probability that a randomly sel...
5 answers
1#yScs Ko Kn Qulomobile i5 travelg 6Sknhr. 1 brakez ~ace lerate c& 6m/ tbu ls9 lta Take to ~l-e Car Hous-fr bw Ie Cai brave ( shict H braKen are aplied
1#yScs Ko Kn Qulomobile i5 travelg 6Sknhr. 1 brakez ~ace lerate c& 6m/ tbu ls9 lta Take to ~l-e Car Hous-fr bw Ie Cai brave ( shict H braKen are aplied...
5 answers
Use Stokes' Theorem to calculate the work done by the forceF = < 2y,xZ,x +y >On a particle moving counterclockwise around the curve of intersection of the planez - y = 2 And the cvlinderx2 +y2 = 1
Use Stokes' Theorem to calculate the work done by the force F = < 2y,xZ,x +y > On a particle moving counterclockwise around the curve of intersection of the plane z - y = 2 And the cvlinder x2 +y2 = 1...

-- 0.018920--