The following values were sampled independently from F(x).
0.86 0.48 4.43 0.87 2.51
Find the empirical cdf for these data, and add 80% confidence band limits. Summarize the information in a table with columns for the estimated cdf Fˆ(x), the range for x, and the lower and upper band limits.
In: Statistics and Probability
What is the empirical formula of your product? Mg O
Percent Mass of the magnesium present is
Trial 1: 54.9%
Trial 2: 54.3%
Percent mass of the oxygen present is:
Trial 1: 45.1%
Trial 2: 45.7%
The answer is Mg4O5 I need help with how to get that , thank you!
In: Chemistry
Q. A certain amino acid has the following elemental composition: C, H, O, N. In a combustion analysis, 3.263g of it was combusted to produce 5.910g of CO2 and 2.835g of H2O. Separate analysis determined that it is 19.17% N, and its molar mass is 150g/mol. Determine its empirical and molecular formula.
In: Chemistry
Why have development economists emphasized the importance of (a) the proportion of national income that is saved and (b) the rate of growth of the population (or labor force)? Illustrate your ideas with discussion of the Harrod–Domar or Cobb–Douglas economic growth models. Also draw on empirical evidence about savings proportions, as presented on the textbook.
In: Economics
17. 1.42 g of a compound containing carbon, hydrogen and oxygen (CXHYOZ) is subjected to combustion analysis. The results show that 1.95 g of CO2 and 1.68 g of H2O were produced. What is the empirical formula for the compound? If the molecular weight of the compound is 160 g/mol, what is the molecular formula of the compound?
In: Chemistry
Discuss the various theories related to the term structure of interest rates. What are the strengths and weaknesses of each of these approaches. What are the implications of the empirical results related to the term structure? What are some of the reasons that we could have a downwardly sloped yield curve? What are the implications of a downwardly sloped yield curve?
In: Finance
In: Finance
Select a psychological disorder (your choice, depression, anxiety, ADHD, etc.). Summarize two theoretical/empirical perspectives of the disorder you selected (e.g., Psychoanalytic, Humanistic, Behavioral, Social Learning Theory, Neuropsychological, psychosocial, etc.).
Critically compare and discuss the implications of these two perspectives on understanding the disorder of focus
In: Psychology
In a certain article, laser therapy was discussed as a useful alternative to drugs in pain management of chronically ill patients. To measure pain threshold, a machine was used that delivered low-voltage direct current to different parts of the body (wrist, neck, and back). The machine measured current in milliamperes (mA). The pretreatment experimental group in the study had an average threshold of pain (pain was first detectable) at μ = 3.28 mA with standard deviation σ = 1.26 mA. Assume that the distribution of threshold pain, measured in milliamperes, is symmetric and more or less mound-shaped. (Round your answers to two decimal places.) (a) Use the empirical rule to estimate a range of milliamperes centered about the mean in which about 68% of the experimental group will have a threshold of pain from mA to mA (b) Use the empirical rule to estimate a range of milliamperes centered about the mean in which about 95% of the experimental group will have a threshold of pain from mA to mA
In: Statistics and Probability
1.Weights of Old English Sheepdogs are normally distributed with a mean of 63 pounds and a standard deviation of 3 pounds. Using the Empirical Rule, what is the approximate percentage of sheepdogs weighing between 60 and 66 pounds?
2.Pro golf scores are bell-shaped with a mean of 70 strokes and a standard deviation of 4 strokes. Using the empirical rule, in what interval about the mean would you expect to find 99.7% of the scores?
3. Running times in a daily workout have a mean of 36 minutes and a standard deviation of 7 minutes. The distribution is unknown. Using Chebyshev's Rule, in what interval about the mean would you expect to find at least 89% of the workout times?
4. A distribution of tire pressures(psi) has the following 5-number summary. What percentage of data is between 42 and 87 ?
| 21 | 42 | 60 | 87 | 108 |
| Min | Q1 | Median | Q3 | Max |
In: Statistics and Probability