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Problem: Promoting women. In academics, faculty typically start as assistant professors, are promoted to associate professor (and gain tenure), and finally reach the rank of full professor. Some have argued that women have a harder time gaining promotion to associate and full professor than do men. Do data support this argument? Search the Web to find the number of faculty by rank and gender at some university. Do you see a pattern that suggests that the proportion of women decreases as rank increases? We found several sources of data by doing a Google search on "faculty head count by rank and gender." In addition to discussing the pattern you find, provide the data, the name of the school, and the source of the data.
A log-normal distribution results (which gets its name from the fact that if the logarithm is taken, the distribution becomes normal). But why is that plausible?
Feasibility Study: Companies that sell groceries over the Internet are called e-grocers. Customers enter their orders, pay by credit card and receive delivery by truck. To determine whether an e-grocery would be profitable in one large city, a pot..
Based on the results for question 1, which attributes seem to be the most important and the least important in the respondents' choice of a shopping area? Which items from #1 did you use to decide on the least and most important attributes and why..
Assume that the population standard deviation is 10 mmHg, and nd a 95% con dence interval for , the population mean.
Suppose that the expected number of accidents per week at an indus- trial plant is four. Suppose also that the numbers of workers injured in each accident are independent random variables with a common mean of 2.
A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
many people who bought x-game gaming systems over the holidays have complained that the systems they purchased were
Suppose you toss ten coins and count the number of heads. What is the probability that the number of heads you count will lie within two standard deviations of the mean?
as a sample size approaches infinity how does the students t distribution compare to the normal z distribution? when a
A sample of approx 25 students enrolled in the university points out that X (bar) = $315.4 and s = $43.20.
A study of the time spent shopping in a supermar- ket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the probability that the shopping time will be:
The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel.
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