Calculate the 95% confidence interval for these set of data: 3.2, 3.3, 3.4, 3.3,3.4 and 3.5 ppm a. 3.35±0.22 ppm Degres of Freedom 80% 90% 95% 99% 99.9% b. 3.35 ±0.17 ppm 631 292 3.08 12.7 63.7 9.92 5.84 637 31.6 1.89 4.30 c. 3.35 ± 0.25 ppm 3. 1.64 235 3.18 129 1.53 2.13 2.78 4.60 8.61 d. 3.35 ±0.11 ppm 1.48 2.02 2.57 4.03 6.87 144 1.94 2.45 3.71 5.96 e. 3.35 ±0.33 ppm 142 190 2.36 3.50 5.41 Please fill in the space with one of the follow ing characters (a or b or e or d or e) 489
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- Help 100% 4A To Public Health Ch x * HSC 258 - Major Projec X MindTap - Cengage Lea X C The Illustration To TH d%=55750828934189288909969212&elSBN=9781305657571&id=D1061392007&nbld=21... * Q Search th References Use the References to access important values if needed for this question. For the following reaction, 24.7 grams of sulfur dioxide are allowed to react with 9.95 grams of oxygen gas . sulfur dioxide(g) + oxygen(g) → sulfur trioxide(g) What is the maximum mass of sulfur trioxide that can be formed? grams What is the FORMULA for the limiting reagent? grams What mass of the excess reagent remains after the reaction is complete? Submit AnswerSample IdentificationCodeConcentration of M%TA=2-log(%T)Q50004.00 x 10-417.90.75Q50013.20 x 10-425.00.6Q50022.40 x 10-435.70.46Q50031.60 x 10-450.20.3Q50048.000 x 10-570.80.15SampleIdentificationCode%TA=2-log(%T)AMQ0210150143.70.359518560.360.000192Q0210150244.10.355561410.360.00018Q0210150343.80.358525890.360.00017Q0210150444.10.355561410.360.00018Q0210150543.80.358525890.360.00017What was their percent error?43%Does Batch 021015 meet legal requirements?No, because it is not between 2.85 * 10(4) and 3.15 * 10(4)Well #DropsBluedye1234567891012345678910Drops 9Distilled water876543210Concne 0.26tration0.52Test Tube #0.781.041.3Solutions3Concentration (M)2.082.32.6Concentration (ppm)1:1 dilution11.82Starting Dilution21.562:1 dilution0A.Zero standard0Was your calibration curve as linear as you expected?B.Did you experience any âdriftâ of the resistance readings?C.What is the equation of your best-fit line?D.What commercial drink did you analyze?E.Assuming…Does the data set of 155.8, 158.4, 194.9, 164.8, 154.5, 184.3, 114.8 and 157.8 ppm contain outlier(s)? (Given that Qcrit.90 % confidence interval (n = 8) D 0.468) %3D %3D O All data should be retained O It is difficult to judge O Both 114.8 and 194.9 ppm are outliers O 114.8 ppm is the outlier O 194.9 ppm is the outlier
- 37. A student recorded the following data for the alcohol content of a blood sample: % C.H5OH: 0.084, 0.068, and 0.079. Calculate the 95% confidence limit for the average of this data.9) The following results were obtained in the determination of Vitamin E mass in tablet samples. Sample 1 2 3 4 5 6 Weight of Vitamin E (mg) 249.1 249.9 251.2 250.2 244.8 251.0 i. Determine whether any data should be rejected or not at 90 % confidence level. ii. Calculate the mean and standard deviation of the data set above. ii. Express the mean weight of vitamin C at 99 % confidence interval.Calculate the mean and 90% confidence interval for the data set. Sample Value 1 8.0626 8.0650 3 8.0583 4 8.0564 8.0571 6. 8.0600 mean: étv A A hulu 2. 5.
- Calculate the 95% confidence interval for these set of data: 3.2, 3.3, 3.4, 3.3, 3.4 and 3.5 ppm a. 3.35 +0.22 ppm Degrees of Freedom 80% 90% 95% 99% 99.9% b. 3.35 + 0.17 ppm 3.08 6.31 12.7 63.7 637 31.6 1.89 1.64 2. 2.92 4.30 9.92 c. 3.35 ±0.25 ppm 5.84 12.9 8.61 6.87 3.18 3 4. 2.35 2.13 1.53 1.48 2.78 4.60 d. 3.35 ± 0.11 ppm 2.02 2.57 4.03 1.44 1.42 2.45 2.36 6. 1.94 5.96 5.41 3.71 e. 3.35 ± 0.33 ppm 1.90 3.50 Please fill in the space with one of the following characters (a or b or c or d or e) Answer:Chemistry In an analysis of the content of carbohydrate present in a glycoprotein, the following results were found: 12.6, 11.9, 13.0, 12.7 and 12.5 g of carbohydrate per 100 g of protein. Taking into account that σ is unknown, the confidence interval for the average value at a 90% confidence level of the carbohydrate content is: Select one:to. 12.5 ± 0.4b. 12.5 ± 0.2c. 12.5 ± 0.5d. 12.5 ± 0.310) The following results were obtained in an analysis of iron content in an ore sample. The results reported as % Fe for each analysis, were as follow: Samples no. 1 3 4 5 6 % Fe 20.10 20.50 18.65 19.25 19.40 19.99 i. Calculate the mean and median from the set of the data above ii. If the true value of %Fe is 19.65 %, calculate the value for absolute error and percentage relative error for sample no. 3 Using Q-test, justify whether an of the data must be rejected at 95 % ii. confidence level iv. Calculate the standard deviation and relative standard deviation of the data.
- In the technique of high performance liquid chromatography (HPLC) the peak area response for a particular analyte is directly proportional to concentration Analgesic tablets typically consist of aspirin and caffeine as the active ingredients, the remainder made up of inert binding material. The concentrations of aspirin and caffeine may be routinely monitored using HPLC, whereby the peak areas obtained from a solution of the tablet are compared with those obtained from standard solutions of the analytes. In an analysis to determine the concentration of caffeine in such a tablet, the following data were recorded: Solutions Analysed: Tablet Sample: Mass of tablet (dissolved in 250 cm methano): 0.523 g Caffeine Standard: Mass of caffeine (diessolved in 500 cm methanol) 0.105 g HPLC results: Solution Peak Area (catfeine) 1. Tablet Sample 325 2. Caffeine Std. 865 The concentration of caffeine in the tablet (expressed as a mass (w/wl percentage) was Oa 1.89 Ob 13.4 O 3.77 Od. 267 Oe 7.54 You…For the following data set: 18.3g, 184g 13g 15.0S Determines whether the questionable data is retained or discarded at 95% confidence. Critical Q values a. Reject b. Retain Valores críticos Número de datos 90% 95% 99% 3 0.941 0.970 0.994 0.765 0.829 0.926 0.642 0.710 0.821 55964. X The in xIG what x I PAP C X G 2HCI X PAP C x G Thep x Q chapt x b ar-2903012.agilixbuzz.com/student/135113422/activity/9ff34d34-df47-4faa-a022-8d87ab138ea2 G.How x Chem x G List a x HASessi X Mastery Assess It 7 150% +, Reset PAP Chemistry-2903012-42100P-1 / Stoichiometry / Lesson 107 Enrique Solis All changes saved 13. Some rocket engines use a mixture of hydrazine, N2 H4, and hydrogen peroxide, H2O2, as the propellant. The reaction equation is N2H4(0) +2 H2O2() → N2(9) + 4 H2O(). Which is the limiting reagent in this reaction when 0.750 mol N2H4 is mixed with 0.500 mol H2O2? O a. H2O b. H2O2 O c. N2H4 с. NHА O d. N2 SAVE&EXIT 13 of 16 NEXT PREVIOUS O O