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A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) was recorded for each household in the sample for the March quarter of 2006. The average usage was found to be 375kWh.
In a very large study in the March quarter of the previous year it was found that the standard deviation of the usage was 81kWh. Assuming the standard deviation is unchanged and that the usage is normally distributed, provide an expression for calculating a 98% confidence interval for the mean usage in the March quarter of 2006.
It is believed that the standard deviation from the population has changed and thus is unknown. However, from the small data set in 2006, we know the sample standard deviation is 91.5kWh. Assuming that the usage is normally distributed, provide an expression for calculating a 98% confidence interval for the mean usage in the March quarter of 2006.
Imagine that you work for an organization that has no Internet use policy; employees use the Internet in whatever
A random sample of 10 houses heated with natural gas in a particular area is selected, and the amount of gas (in therms) used during the month
Reflect on your in-class and outside readings, as well as your personal and professional experience, to respond to these questions.
The firm will not shut down in the short run since price is more than average variable cost but it will experience losses since price is less than average total
Jeff is an analyst. The human resources department is very unhappy with their payroll package. They want the information systems department to write them a new package as they think they have unique needs that can't be meet with a packaged solution..
What are some new trends in wireless technology that a company should research for the WLAN solution?
Given the following list of international and U.S. information security standards and compliance laws, choose one standard and one law
Similar reasoning is utilized to describe occurrence of water lubrication film beneath ice skates. Describe your opinion of this explanation?
Find the number of hours before the rate of production is maximized. That is, find the point of diminishing returns.
Great computer experts have to understand atleast some programming languages
Suppose you are evaluating the following investment opportunity. The firm is expected to have cash flows of $100 starting one year from now and they are expected to grow by 10% each of the next 4 years. Every year following year five the cash flow..
In the previous step, let n = 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 400, and 800. For each n, see whether the average number of calls to compareTo is greater than or equal to the lower bound n - 1 (see Exercise 7) and less than or equal to..
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