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The Environmental Protection Agency (EPA) has established national ambient air quality standards in an effort to control air pollution. Currently, the EPA limit on ozone levels in air is 12 parts per hundred million (pphm). A study examined the long-term trend in daily ozone levels in Houston, Texas. One of the variables of interest is , the number of days in a year on which the ozone level exceeds the EPA 12 pphm threshold. The mean number of exceedances in a year is estimated to be 18. Assume appropriate probability distribution for and provide logical reasoning behind your assumption.
Compute P(Y<=20)
Compute P(5<=Y<=10)
Estimate the standard deviation of Y. Within what range would you expect Y to fall in a given year?
A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has.
A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster.
Consider your study (Terrorism Ideology and Perception of National Security Strategies by local police), conduct a mock power analysis using G*Power. Include the results of your power analysis in a word document. Submit these results along with a bri..
If another sample of 1000 companies is taken, do you expect the sample mean to be 7.2 again? Why or why not? Repeating this experiment many times with different samples.
if a correlation coeficiant calculated for n14 and a0.01 is found to be r.0856 what is the test value for the
a sample set of 29 scores has a mean of 76 and a standard deviation of 7. can we accept the hypothesis that the sample
the standard deviation of a normal random variable is 20. if a sample of 225 is selected out of a large population what
bill is interested in the infrequent arrival of birds on a remote pacific island in the south seas. the mean number
Let F be a field and f(x), g(x) be elements of F[x]. Show that f(x) divides g(x) if and only if g(x) is an element of .
The process standard deviation is .15, and the process control is set at plus or minus one standard deviation. Units with weights less than 9.85 or greater than 10.15 ounces will be classified as defects. Round your answer to four decimal places.
1. the company believes that it averages about the same weight per bag in each of two production lines. to test this
The owner of a local casino. Recently, the operations department proposed to introduce one new gambling game. There are two options. The probability distributions of payout (i.e., the money player will win) for a player in the two options are ..
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