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Conduct the hypothesis test and provide the test statistic, critical value and/or P- value and state the conclusion.
Do World War II Bomb Hits Fit a Poisson Distribution? In analyzing hits by V-1 buzz bombs in World War II, South London was subdivided into regions, each with an area of 0.25 km2. Shown below is a table of actual frequencies of hits and the frequencies expected with the Poisson distribution. Use the values listed and a 0.05 significance level to test the claim that the actual frequencies fit a Poison distribution.
Number of bomb hits 0 1 2 3 4 or moreActual number of regions 229 211 93 35 8Expected number of regions 227.5 211.4 97.9 30.5 8.7(from Poisson distribution)
The mean monthly demand for steam boilers is 6.8 with a standard deviation of 1.7. Compare the dispersion of these distributions. Which demand pattern has more relative variation? Explain.
Draw a scatter diagram and consider the correlation for the provided data. Do larger universities tend to have more property crime.
Find the most powerful predictor among the six independent variables using regression.
We desire to test at 0.05 level of significance whether modification increases the life of battery. What is our decision rule? Reject null hypothesis if calculated t is less than 1.96.
Using bar charts to compare observed frequencies between variables can be problematic when?
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb.
Four components of a time series are secular trend, cyclical variation, seasonal variation, and irregular variation (Lind, 2005). Briefly describe each of these components and provide a real-world example of one component.
Solution throughout graphical method. Produced by a company linear programming model is used to describe the production schedule.
From a random sample we know that the average duration of unemployment in a low developed region A is 147 days (with standard deviation sA = 32 days and nA = 230 unemployed).
If you were to roll a single die 10 times, the result of each roll would be __________. A) Mutually exclusive of the other nine rolls B) Proportional to the other nine rolls C) Dependent upon the other nine rolls D) Independent of the other nine roll..
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
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