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1. Concentrations of atmospheric pollutants such as carbon monoxide (CO) can be measured with a spectrophotometer. In a calibration test, 50 measurements were taken of a laboratory gas sample that is known to have a CO concentration of 70 parts per million (ppm). A measurement is considered to be satisfactory if it is within 5 ppm of the true concentration. Of the 50 measurements, 37 were satisfactory.
a. What proportion of the sample measurements were satisfactory?
b. Find a 95% confidence interval for the proportion of measurements made by this instrument that will be satisfactory.
c. How many measurements must be taken to specify the proportion of satisfactory measurements to within ±0.10 with 95% confidence?
d. Find a 99% confidence interval for the proportion of measurements made by this instrument that will be satisfactory.
e. How many measurements must be taken to specify the proportion of satisfactory measurements to within ±0.10 with 99% confidence?
Discuss the effects on a country's current-account balance from the following changes in tax rates. a. A permanent increase in the tax rate on labor income and b. A temporary increase in the tax rate on asset income
If maria spends a fixed dollar amount per week on movie rentals regardless of changes in the price, mariaʹs demand for movie rental can be considered:
comparison of u.s. economy with other economieschoose three countries that are considered as high income countriesand
Julie is getting ready for final exams. She has three exams during the first three days of the exam period. To prepare, she has outlined a schedule that includes reviewing for her first exam on one day, her next exam on the following day, and her ..
Compute Kelson's short-run supply curve for its product.
In a price-taker market, if a business operator produces efficiently-that is, if the cost of producing the good is minimized-the operator will be able to make at least a normal profit
Business Week, in an article dealing with management, wrote, "When he took over the furniture factory three years ago.(the manager realized almost immediately that it was throwing away at least $100,000 a year worth of wood scrap.
in the old days lighthouses were built along the coast to prevent ships from runnung around on the rocks in unfamiliar
What can they learn from the adopting innovation and how can this be used to maintain a competitive edge?
Describe the background of your hypothetical corporation. Your description should include, but not be limited to, the type of business, products, and services that your MNC provides.
Probability values are assigned on a scale from 0 to 1, with 0 indicating that an event will not occur and 1 indicating that an event will definitely occur. In this activity, you will apply basic concepts of probability to common workplace issues.
Calculate the variable cost (VC). For each level of output except zero output, calculate the average variable cost (AVC), average total cost (ATC), and average fixed cost (AFC).
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