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The Great Plains region of the United States usually has a number of tornadoes during the non-winter months. Groups of scientists, called storm chasers, travel throughout the region when thunderstorms are expected in the hopes of encountering a tornado and taking various measurements on it. The file Stormchaser.csv contains the number of tornadoes encountered on 69 12-hour long storm chases during 1999-2004 for one particular storm chaser. Using these data, do the following:
(a) Make a plot comparing the observed counts of tornadoes against the Poisson PMF. Comment on the fit of the Poisson model; does zero inflation appear to be a problem?
(b) What different assumptions do the hurdle and ZIP models make regarding the cause of zero counts of tornadoes?
(c) There are many different kinds of thunderstorms, but storm chasers specifically seek those that seem to have the potential for tornadic development. With this in mind, describe what the parameter π would represent in a zero-inflated model.
(d) Fit both the ZIP and hurdle models, using only an intercept for both the mean and probability portions of the models. In each model, estimate both parameters with 95% confidence intervals and interpret the results.
When using wireshark, and you want to monitor WAN ping traffic, you need to monitor what protocol, (ie pingwww.devry.edu)?
In each of the following examples, describe how the information given about consumer demand helped managers develop the appropriate strategies to increase profitability and how this information was obtained: a.Auto industry executives have begun to f..
It requires us to change some code around in a file to add joptionpane dialog boxes in instead of the fields already there. The following is the exact wording of the assignment:
Visit the Web sites of the major technology organizations
How does the extra information in your revised protocol protect against arrival of late packets from prior connection incarnations, and sequence number wraparound?
Calculate the sum of the total miles you spent running over the 10 weeks. Calculate the average number of miles you ran.
how to create a system restorepoint in task scheduling using the GUI in Windows 7 and task scheduling using the AT command in Windows 7.
What are the internal and external corporate governance mechanisms used in the modern corporation?
Evaluate the use of a Distributed Database Management System (DDBMS). As with most things, there are numerous advantage and many disadvantages. Evaluate and rank them. What would be good situations to use a DDBMS and why?
Discuss privacy protection issues in search engines business. You can use Google as an example.
Each block of text or images enclosed in frames, with rounded corners, are clickable. That is, if users click on these specific frames, a new tab will open within the web browser to display a page of information.
The sampling cube was proposed for multidimensional analysis of sampling data (e.g., survey data). In many real applications, sampling data can be of high dimensionality (e.g., it is not unusual to have more than 50 dimensions in a survey data set..
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