3. Terms
accuracy : is closeness of experimental value to the true literature value
precision : is closeness of individual values to each other in an experiment
LOD : limit of detection, is the lowest quantity of solute that can be detected by the instrument
LOQ : limit of qantification, is the lowest amunt of solute that can be quantified in an experiment
RSD : relative standard deviation is the percentage of standard deviation to the actual mean
Official method : is a method certified to be used for analysis of a substance
4. The food sample must be homogenized in its content at all places such that sample taken from any end will result in the same analysis results. Heterogeneous samples give different results for samples taken from different parts.
Question for 3 and 4 3. Know the meaning of the following: accuracy, precision, LOD, LOQ,...
(e Give one suggestion to improve the (G) accuracy and (ii) the precision of the titration analysis. 3. A new analytical method is developed to measure the mercury concentration in sewage produced by an industrial factory. The results (ppm) are compared with the traditional method and are shown below: Sample New method 80.11 79.70 80.44 80.72 79.24 79.66 Traditional method 79.80 80.02 82.33 79.91 81.97 82.60 3 4 (a) Determine whether the 2 methods give thesameresults at 90% confidence level....
Question 3 Inertial Survey Systems are widely used because of its low cost and accuracy. True/ False Question 4 The precision of the Geoid model is limits the use of GNSS survey for vertical control purposes. True/False Question 5 Due to variations in mass distribution and the rotation of the Earth, the Geoid is a flat surface. True/False Question 6 The Geoid is an equipotential gravitational surface. True/False
QUESTION 3 To practice reflexivity, qualitative researcher’s ask their informants to explain the meaning of their actions. a. True b. False 10 points QUESTION 4 Field observation in Smith’s study of transnationalization was generally overt and participant. a. True b. False 10 points QUESTION 5 Participant observers may experience tension between expectations associated with their roles of participant and observer. a. True b. False 10 points QUESTION 6 Overt observers may reduce reactivity by establishing trust and...
I dont know how to do question 1 part (iv) 1. (a) [15 marks] Total ascorbic acid can be analysed by spectrophotometric method based on the oxidation of ascorbic acid to dehydroascorbic acid by bromine water in the presence of acetic acid. After coupling with 2,4-dinitrophenylhydrazine (DNPH) a red complex that absorbs at 521 nm is produced. The following data were obtained for a series of ascorbic acid standards: 25 UNU [ascorbic acid] No. of replicate Average Standard ppm analyses...
I need a matlab code for given question. Please send matlab code sctript. a:2 b:3: c:4 d:2.1 e:3.1 Question 1) (60 p) Consider following equation: axt-bx'+ex=dx-e Find the value of x via; a) Fixed Point iteration method with an accuracy of 0.0004 and a starting value of 1. b) Newton's Method with an accuracy of 0.0004 and a starting value of 1. Write the codes and the results to your paper.
question 4: a, b, c Suggested Readings - 167 3. What is the special meaning of each type of cost (TVC, TFC, TC, AVC, AFC, ATC, and MC)? 4. Suppose you are the operator of a firm with the following short-run schedule of output and total cost: Output Total Cost 1000 2000 3000 4000 5000 6000 $10,000 15,000 25,000 40,000 60,000 90,000 130,000 a. What is your firm's total fixed cost? total variable costs? average variable costs? average total costs?...
3. Why do you need to use sand while grinding the food samples? 4, what is the purpose of 15% Na2SO4? 5. Learn the meaning of following terms. Amphipathic, Esterification, Fatty Acids (saturated vs unsaturated), Phospholipids, Polar vs. Nonpolar, Steriod, Triglycerides, Waxes.
Please read the following post and critique it and ask one question regarding the following post. Qualitative research designs focus on how the reliability of the said design and methods that will affect the credibility and significance of the findings and their overall effectiveness in the clinical setting. There are 3 different criteria to appraise qualitative studies. This consists of the identifying the components of the qualitative research process in studies, determining study strengths and weaknesses, and evaluating the trustworthiness,...
Question 3 1 pts What is the meaning of the P-value provided by a one-way ANOVA? How likely that a mistake is made by rejecting a true null hypothesis If you reject the null hypothesis, there is a 5% chance that you're making an incorrect decision The probability that the observed test-statistic would occur by chance if the null hypothesis is true The probability that there is a difference between the sample means Question 4 1 pts What are the...
3/ Consider the following income statement data for Barolo Inc.: 2020 2019 Sales revenue $97,300 $86,200 Less: Cost of goods sold 45,600 53,400 Gross profit 51,700 32,800 Less: Selling and administration costs 22,500 18,300 Net Income $29,200 $14,500 The common-size percentage for selling and administration costs in 2020 was a/ 21.2%. b/ 23.1%. c/ 43.5%. d/ 77.0%. 4/ Why is the audit report important in the analysis of a company? a/ It guarantees the accuracy of the information in the...