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The output from a sewage treatment plant is constantly monitored to assess treatment efficacy. Suppose that the mean coliform content is 20 bacteria / ml with a standard deviation of 4 bacteria / ml. Assume the distribution of coliform content is approximately normal. An automatic measuring device is being used to monitor the bacterial levels. An alarm should ring whenever the bacterial level exceeds the 97.5th percentile. When should the alarm ring?
a. 20 bacteria per mlb. 32 bacteria per mlc. 24 bacteria per mld. 28 bacteria per mle. 16 bacteria per ml
Calculation of a Function in Microsoft Excel
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- Either clear-cutting in national forests is halted and old-growth trees are allowed to stand, or salmon runs will be destroyed..
You have been assigned to analyze the accounting information for a Fortune 500 corporation. From the e-Activity, evaluate which tools you would use to analyze its business processes, indicating your rationale.
What is the estimated standard error of the sample mean? Construct a 95 percent confidence interval for the population mean category fluency test score.
Estimate, with 95% confidence, the mean solution time for the algorithm. Interpret the result. How many problems must be solved in order to estimate μ to within 0.25 seconds with 95% confidence
the weight of food packed in certain containers is a random variable with a mean of 16 oz. and a standard deviation of
-describe the study's purpose (hypothesis or research question explored) -Describe the type of research conducted (experimental, correlational, quasi-experimental, etc.)
Using a random sample of 100 workers, researchers calculate a 95% confidence interval for the average hourly wage earned by construction workers in the city of Boston. This interval they calculate is from $18 to $26.
a. What is the sample proportion, p 5 proportion of contacts that resulted in a sale being made? b. For simple random samples of this size, what is the probability that p # 0.10?
What is the probability that at least 8 of the next 15 errors are due to operator errors? What is the probability that no more than 3/10 failures are due to operators?
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02.
Given that a population of scores is normally distributed with μ = 110 and σ = 8, determine the following: The percentage of scores that are between a score of 101 and 122.
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