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Pretend that you are a Finance person in a large dynamic company. Your dream is to become CFO someday, so you want to make good financial decisions. You know something about the SDLC phases that IT uses, and you like them because they will help you make good financial decisions at the right points during the project, working closely with IT. You have been assigned to investigate this project request. The VP from manufacturing wants to (1) have the IT Department build a new business application for tracking all activities in her department, and (2) she also wants to order a "SUN Supergiant9000 Server" (costs $250,000) right away to run it on. Assume that you are part of the decision-making process on funding (or not funding) the project.
A. Who are some of the key people you should you talk to, and why?
B. What kinds of questions should you ask to help decide if the project should be funded?
C. In which specific SDLC phase should hardware actually be ordered (if it is still needed at that point)?
If the sample standard deviation of the sample was $630 also the sample size was 50. Findout the 90% confidence interval of true mean.
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call?
Perform a parametric analysis by assessing the fractional change in the probability of failure with respect to a small change in the mean and standard deviation of selected variable.
Teenage pregnancies. The U.S. National Center for Health Statistics reports for 2006 the distribution of teenage pregnancies by age range and ethnicity of the mother.
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour.
For a hypothesis test about a population proportion or mean, if the level of significance is less than the p-value, the null hypothesis is rejected.
A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages. On each page
the National Indian Gaming Association are dedicated to Native American affairs. What effect have these organizations had on reducing tribal poverty encouraging prosperity?
We are 95% confident that the proportion of non sell-able items for Whole Fruits is anywhere between 6.4% and 15.6% HIGHER than the proportion of non sell-able items for Green Grocer.
It was thought that hypnosis would lower a person's desire to smoke. A researcher decided to investigate this hypothesis using a paired-sample sign test in which the number of cigarettes/day smoked by subjects was recorded before and after hypnosi..
Statisticians use terms like trial, outcome and success in a particular way in reference to probability. What do each of these three terms mean in this context?
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