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Please solve the following problem, indicating your response on a Word document and submitting the document via File Upload.
Using the following formula, solve the problem below, and show your work.
TWA = CaTa + CbTb + ... + CnTn
Note: All concentrations are in parts contaminant per million parts of air or milligrams of contaminant per cubic meter of air.Air Sampling Problem: You are an industrial hygienist that is conducting personal sampling on a worker who is overseeing a production process involving use of toluene (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 200 parts per million (ppm)). You are able to measure the following exposures:
500 ppm for 1 hour100 ppm for 4 hours225 ppm for 3 hoursWhat is the calculated TWA? What would you tell plant management in terms of exposure to toluene and compliance with the PEL?
a.compute descriptive statistics for each stock and the sampp 500. comment on your results. which stocks are most
What is the standard error of his prediction?
Develop a frequency distribution and a frequency histogram for the sales values. Describe the distribution of these sales values.
A random sample of [n=64 children] of working mothers showed that they were absent from school a sample average of [x=5.3] days per term, with a standard deviation [s=1.8 days]. Provide a 96% confidence interval for the average number of days absent..
ltbrgtas of last year only 20 of the employees in an organization used public transportation to commute to and from
A manufacturing process produces semiconductor chips with a known failure rate of .If a random sample of chips is selected, approximate the probability that at most will be defective.Use the normal approximation to the binomial with a correction for ..
Comment on the production control situations depicted by the four control charts shown on the following page, and state what action, if any, would be necessary in each case.
A quality control engineer at a potato chip company tests the bag-filling machine by weighing bags of potato chips. Not every bag contains exactly the same weight. But if more than 15% of bags are overfilled, then they stop production to fix the mach..
According to nielsen media research, children (2-11 years old) spend an average of 21.50 hours watching television per week while teens(12-17 years old) spend an average of 20.67 hours per week. based on the statistics below, there is a suffi..
Calculate the difference for each subject, then calculate the mean and standard deviation of these differences.
Let X be the sample mean of a random sample of size n from a uniform distributionon the interval [0, b], and let bb = 2X be an estimator of the upper endpoint b.(a) Demonstrate that bb is an unbiased estimator of b, and find the variance of th..
What is the difference between the "Null hypothesis" and the alternate hypothesis? What are some tips for knowing how to set up the two hypothesis?
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