Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the seats and find the mean deviation for each set. Use a spreadsheet if it is convenient. (a) 0.0110 0.0104. 0.0105
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Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the seats and find the mean deviation for each set. Use a spreadsheet if it is convenient. (a) 0.0110 0.0104. 0.0105
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- 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…1. The table below shows average temperatures recorded over a five-day period last winter (a) Calculate the mean values, X, of these temperatures (b) Calculate the standard deviation of the average temperatures . Clearly show all your calculations (c) Find confidence interval at 90% and 99% Days Temperature (°C) 21 2 23 17 25 12 6. 192. As the director of a research laboratory you are paid to decide if there is a significant difference between the mean values of two sets of data obtained by two different scientists, a senior scientist and one recently hired. Use 95% CL. (t at df = 10 is 2.23) Data of Senior Scientist: xmoan = 24.66% with s = 0.06% for n = 5 Data of the New Kid: xmean = 24.55% with s = 0.10% for n = 7
- What is a 99% confidence interval uncertainty of the slope when we are given a trendline with a slope of 42.211 and an R² value of 0.9991 for a set of 145 data points?In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?You have the following data points which belong to a function of the form y = ae, where b can be positive or negative. ม 13.7 29.6 34.6 x 2.00 4.00 5.00 You wish to determine the value of the constant, b, and to do so you will construct a linear plot. What will you plot against what? y-axis label: x-axis label: From the values of x and y in the table above, calculate the values of the three corresponding data points. Click on the graph below, and use the "Freeform Curves" tool to plot the data. Line segments will automatically connect the points. Enter Solution. What is the numerical value of the constant, b?
- (b) The random error, r', on the result, R, is given by F = √()*² + ( )² R where v', and v, are the random errors on V', and Vt, respectively (1) Let V=26.00 mL, V = 24.00 mL; v' = ±0.01 (3) mL, vt = ±0.01 (2) mL. What is the percentage random error, r'/R x 100%, on R? (2) What is r'/Rx 100 if the conditions of each titration vary (e.g., different portions of the burette stem are used) so that V₁= 26.00 mL, V₁ = 24.00 mL; v' = ±0.05(2) mL, vt = ±0.04(8) mL?An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5What is the 95% confidence interval for the mean?Use the References to access important values if needed for this question. You have the following data points which belong to a function of the form y = ae", where b can be positive or negative. 4.13 3.26 2.57 0.100 0.200 0.300 You wish to determine the value of the constant, 6, and to do so you will construct a linear plot. What will you plot against what? y-axis label: Iny - x-axis label: x From the values of a and y in the table above, calculate the values of the three corresponding data points. Click on the graph below, and use the "Freeform Curves" tool to plot the data. Line segments will automatically connect the points. Enter Solution What is the numerical value of the constant, b? b = Submit Answer Retry Entire Group No more group attempts remain
- The following molarities were calculated from replicate standardization of a solution: 0.5021, 0.5015, 0.5035, 0.5007, 0.504, 0.5025, and 0.5008 M. Assuming no determinate errors, what is the upper limit of the 95% confidence interval?The ages of a group of 122 randomly selected adult females have a standard deviation of 18.5 years Assume that the ages of female statistics students have less variation than ages of females in the general population, so let o = 18 5 years for the sample size caloulation How many female statistics student ages must be obtained in order to estimate the mean age of all female statistics students? Assume that we want 95% confidence that the sample mean is within one-half year of the population mean. Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population? The required sample size is (Round up to the nearest whole number as needed)The explanation Cannot be hand-drawn must be typed Answer 2C (look at 2a, and 2b for all relevant data)