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Identify and provide an explanation of the differences between homogeneous and heterogeneous sampling in the context of sampling methods.
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- Identify and provide an explanation of the differencesbetween homogeneous and heterogeneous sampling in the context of samplingmethods.A sample is selected from a population with µ = 46, and a treatment is administered to the sample. After treatment, the sample mean is M = 48 with a sample variance of s2 = 16. Based on this information, what is the value of Cohen’s d?A manufacturer’s process for analyzing aspirin tablets has a known variance of 25. A sample of 10 aspirin tablets is selected and analyzed for the amount of aspirin, yielding the following results in mg aspirin/tablet. 254 249 252 252 249 249 250 247 251 252 Determine whether there is any evidence of a significant difference between that the sample’s variance the expected variance at α=0.05
- A chemical synthesis was carried out four times, resulting in yields of 51.2%,51.2%, 57.4%,57.4%, 48.1%,48.1%, and 44.6%.44.6%. Calculate the range, mean, and average deviation of these values.If you measure a quantity four times and the standard deviation is 1.0% of the average, can you be 90% confident that the true value is within 1.2% of the measured average?5
- 3-3 Types of Error; 3-4 Propagation of Uncertainty from Random Error ¹. If A = 3.475 (±0.002), B = 87.336 (±0.001), C = 10.004 5 (±0.000 5), D = 11.8 (±0.2), and E = 5.10 (±0.03), report the answers of the following calculations with both the absolute uncertainty and the percent relative uncertainty. a) (A - B) X E c) (10-) / (E/1000) b) (C+D)/(A X E) d) [ (A + B + C) x (B - C - E)] / [DXE]Explain the difference between the propagated uncertainty and the standard deviation. Which number would you use to describe the uncertainty in the measurement?(81310 - 76200) ÷ 0.00216 With Sig Figs
- Consider the following sets of replicate measurements: (1) Calculate the mean and standard deviation of Group A. (2) Determine the confidence interval at 95% confidence level. Assume the data here are the only knowledge you have and no previous measurements are available.What are the advantages and disadvantages of volumetric and gravimetric analysis?I am supposed to calculate Average absolute deviation (%). I am not sure if 7.16 is the final answer, or do i need to multiply by 100 because they are asking for percent?
