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Private consumption as a share of GDP is a random quantity that follows a roughly normal distribution. According to an article in BusinessWeek, for the United States that was about 71%.6 Assuming that this value is the mean of a normal distribution, and that the standard deviation of the distribution is 3%, what is the value of private consumption as share of GDP such that you are 90% sure that the actual value falls below it?
whites represent 77.7 of the usa and 38.8 is on welfare blacks represent 13.2 of the usa and 39.8 is on welfare and
Difference Between Samples with Same or Equal Mean
For a simple random sam- ple of 20 bottles of toner, the average was 1535 pages, with a standard deviation of 30 pages. Making and stating whatever assumptions you believe are necessary, con- struct and interpret the 95% confidence interval for th..
use a z-test to test the claim about the population mean u at the given level of significance of using the given sample
What are the mean value and standard deviation of the number among these 15 that are from the second section? What are the mean value and standard deviation of the number of projects not among these first 15 that are from the second section?
What if the size for each sample were increased to 20? Would a sample mean of 115 or more be considered unusual? Why or why not? Why is the Central Limit Theorem used?
From National Weather Service records, the annual snowfall in the TopKick Mountains has a mean of 92 inches and a standard deviation ? of 12 inches.
Assuming that the process is operating correctly according to specifications, what is the probability that a sample will indicate that an adjustment is needed?
a product is made up of two subsystems in series. the first subsystem consists of 15 components in series. the second
1. a severe drought affected several western states for 3 years. a christmas tree farmer is worried about the droughts
A standard deviation of 100, what would be the cutoff score for selecting the top 10% of applicants, assuming that the standardized test is normally distributed?
The use of linear regression is a critical tool for a manager's decision-making ability. Please carefully read the example below and try to answer the questions in terms of the problem context.
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