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Question: Environmentalists are concerned about emissions of sulfur dioxide into the air. The average number of days per year in which sulfur dioxide levels exceed 150 milligrams per cubic meter in Milan, Italy, is 29. The number of days per year in which emission limits are exceeded is normally distributed with a standard deviation of 4.0 days. What percentage of the years would average between 21 and 37 days of excess emissions of sulfur dioxide? What percentage of the years would exceed 37 days? What percentage of the years would exceed 41 days? In what percentage of the years would there be fewer than 25 days with excess sulfur dioxide emissions?
consider a continuous time markov chain with three states 123. suppose that v1 2 v2 3 v3 5 and that the embedded
The formula for a regression equation is Y' = 2X + 9. a. What would be the predicted score for a person scoring 6 on X? b. If someone's predicted score was 14, what was this person's score on X?
They are asked if they use a laptop in class to take notes. Suppose that based on the survey, 220 of the 400 students responded "yes". a) What is the value of the sample proportion ^p ? b) What is the standard error of the sample proportion?
A scientist examined the effect of temperature and catalyst on the yield of a reaction. He ran the experiment at both 150° and 200°C with two types of catalyst.
Describe what do you mean by terms 'false positive" and " false negative".
Write down the differential equations which describe the probabilistic behavior of the unit in time as a Markov process.
The Artist's Palette sells high-end art supplies to the art students at three regional art and design schools in Philadelphia, Washington, D.C., and Baltimore.
What's the probability you lose both games?- What's the probability you win both games?- Let random variable X be the number of games you win. Find the probability model for X.
Show that if S has more than one point, a separated uniformity never converges as a filter for its product topology.
a biologist wants to test the null hypothesis that the mean mean wingspan of a certain kind of insect is 12.3mm against
When sampling is for a population proportion from a population with actual proportion p = 0.5, using a sample of size n = 120, what is the standard deviation of our estimator P^?
Problem: Two rainstorms occurred in one week in a certain area. In the first storm 30 ml of rain fell per hour, and in the second storm 20 ml of rain fell per hour.
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