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Pesticide concentrations in sediment from irrigation areas can provide information required to assess exposure and fate of these chemicals in freshwater ecosystems and their likely impacts to the marine environment. In a study (Jochen F. Muller et al., "Pesticides in sedi- ments from Queensland Irrigation channels and drains," Marine Pollution Bulletin 41(7-12), 294-301, 2000), 103 sediment samples were collected from irrigation channels and drains in 11 agricultural areas of Queensland. In 74 of these samples, they detected DDTs with concentration levels up to 840 ng g-1 dw. Obtain a 95% con?dence interval for the proportion of total number of sediments with detectable DDTs.
You have been retained as a consultant to SarParKingsGraUsch. Your job is to determine if this particular overbooking strategy is sound. Use simulation methods to perform your analysis.
estimating the combined mean values for the given data.one sample of n 4 scores has a mean of m 10 and a second
a company that manufactures video cameras produces a basic model and a deluxe model. over the past year 30 of the
The following data were obtained in an experiment to estimate a possible relation between the number of showings in one week of a TV commercial in typical sales territories and the sales (in thousands of units) in that territory of the advertised ..
Write in interval notation the real numbers greater than or equal to 3 and less than 9. Translate the verbal expression into an algebraic expression: a cubed minuis b cubed.
Develop a trend line for the demand for fertilizer using computer software. Data collected on the yearly demand for 50 pound bags of fertilizer at Wallace Garden Supply are shown in the following table:
a coal company wants to determine a 95 confidence interval estimate for the average daily tonnage of coal that they
Your younger brother comes home one day after taking a science test. He says that someone at school told him that "60% of the students in the class scored above the median test grade." What is wrong with this statement? What if he said "60% of the..
Distribution of Digits in the Irrational Number Pi The number p is an irrational number with the property. At the 0.05 significance level, test the claim that the digits are uniformly distributed.
A marketing survey is conducting in which students are to taste two different brands of soft drink. Their task is to currently identify the brand tasted.
The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes.
the verbal part of the graduate record exam has a mean ? of 500 and a standard deviation ? of 100. use the normal
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