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The Consumer Price Index (CPI) is an important indicator of the general level of prices of essential commodities. It is widely used in making cost of living adjustments to salaries, for example.
1. Log on to the Consumer Price Index (CPI) home page of the Bureau of Labor Statistics Web site (stats.bls.gov/cpihome.htm). Get a table of the last 48 months' CPI for U.S. urban consumers with 1982-1984 as the base. Make a time plot of the data. Discuss any seasonal pattern you see in the data.
2. Go to the Average Price Data area and get a table of the last 48 months' average price of unleaded regular gasoline. Make a comparison time plot of the CPI data in part 1 and the gasoline price data. Comment on the gasoline prices.
First, write out the expres- sion for the exact determination of the cut-off point, and secondly, use the CLT for its numerical determination.
Differences in Descriptive and Inferential Statistics and analyze the differences between descriptive and inferential statistics.
Suppose the time interval between two consecutive defective light bulbs from a production line has a uniform distribution over an interval from 0 to 90 minutes.
We use the observation vector Y = Y(n) = [Y1 ··· Yn]' to estimate X = X21. Find the LMSE estimate L (Y(n)) = (n)Y(n). Graph the mean square error e∗L(n) as a function of the number of observations n for φ0 ∈ {0.1, 0.5, 0.9}. Interpret your results...
The 47 students on a computer studies course each recorded the number of whole minutes, x, spent surfing the internet during a given day. Find the standard deviation SD = σx
We wish to estimate the population proportion. We want to be 95 percent confident of our results and we want the estimate to be with .01 of the population parameter. No estimate of the population proportion is available. What value should we use f..
How does a multiple base line design differ from a reversal design and give three reason a researcher might chose to use a single case design?
tv advertising agencies face growing challenges in reaching audience members because viewing tv programs via digital
What did you assume to construct these control limits (be specific)? Check the assumptions. Given the information in the base period, how comfortable are you with these assumptions?
assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of 2275
Below is a normal plot of residuals from a regression. Does the plot indicate any problems with the assumption that the residuals are Normally distributed
a basketball player with a poor foul-shot record practices intensively during the off season. he tells the coach that
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