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Listed below are measured amounts of lead (in micrograms per cubic meter, or μg/m3, in the air. The Environmental Protection Agency has established an air quality standard for lead of 1.5 μg/m3. The measurements shown below constitute a simple random sample of measurements recorded at Building 5 of the World Trade Center site on different days immediately following the destruction caused by the terrorist attacks of September 11, 2001. After the collapse of the two World Trade Center buildings, there was considerable concern about the quality of the air. Use a 0.05 significance level to test the claim that the sample is from a population with a mean greater than the EPA standard of 1.5 μg/m3. (Hint: Create a quantile plot. See Normal Quantile Plots on Blackboard.) How does the shape of the quantile plot affect your interpretation of the results? 5.40 1.10 0.42 0.73 0.48 1.10
In addition, the cruise line has decided to plan for an additional 25% more meals than bookings. Formulate the appropriate linear program and solve using Excel Solver. Show your Work in Excel.
In brief describe three situations in which the 'First In First Out' discipline rule is not applicable in queuing analysis. Provide examples of four situations in which there are limited, or finite population.
A data set of ordered pairs with a negative linear correlation has a coefficient of determination of 85.2%. What is the linear correlation coefficient?
If you must estimate the population mean within 10 days, how many outside salespeople should you sample? Use the 90 percent confidence level.
The sample mean of the sampling distribution of a statistic is 6 and the standard error of the statistic is 1.03. What is the probability that xbar > 7.52?
The computed value of chi-square: Which of the following is true about the F distribution:
Formulate a hypothesis statement and perform the five-step hypothesis testing procedure on the data identified.
The college theater department recently staged a production of a modern musical. A researcher recorded the gender of each student entering the theater and found a total of 385 females and 215 males.
Compute the suitable Test Statistic to test hypothesis that the proportion of condominiums that sold within 30 days decreased from 2006 to 2007.
If the probability that she dies in the coming year is 0.001, what is the expected gain for the insurance company?
The yield strength of a metal bolt has a mean of 6,050 pounds with a standard deviation of 100 pounds. Twenty samples of three bolts were tested, resulting in the means shown below.
Examine the data and determine if the distribution of IQ scores could be normal. You should confirm or reject normality by means of a visual inspection of the shape of the distribution.
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