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An index of two store items for 2007 based on 2005 is to be constructed. The information for the prices and quantities for both years is given below. Use 2005 as the base period and 100 as the base value.
2005 2007
Item Price ($) Quantity Price ($) Quantity
Item 1 80 503 91 529
Item 2 45 1158 52 1251
For full marks your answer should be accurate to at least one decimal place.
Determine Paasche's price index.
A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be:
Develop the estimated regression line. Jensen expects to use the machine 30 hours per week, develop a 95% prediction interval for the company's annual maintenance expense.
Only 40% of these eruptions last longer than 2 minutes. For each of the following random variables, write down the distribution and the PMF. (Identify all parameters) What are the expectation and variance?
Utlizing binomial approximation to normal finding the normal model. A grower claims that only 13 percent of the strawberries he grows are unsatisfactory.
1.determine whether each of the following is an experiment or an observational study. also identify the explanatory and
The Ohio Department of Highways is in the process of selecting a new paint for highway use. Four different paint companies have been contact regarding this need and each of the companies has supplied paint for testing.
A histogram of time spent eating & drinking each day is skewed right. Use this result to explain why a large sample size is needed to construct a confidence interval for the mean time spent eating & drinking each day.
Find out the mean number of letters that will arrive in two days.
A marketing research analyst collects data for a random sample of 100 customers out of the 400 who purchased a particular "coupon special".
What is the p-value associated with the sample results? What is your conclusion based on the p- value?
The New York Times reported (L.J> Flynn, Tax Surfing, The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the internal Revenue Service (IRS) , was 0.8 second. Suppose that the download time was normally di..
Suppose that 80% of all batteries have acceptable voltages, and let y denote the number of batteries that must be tested. What is p(2), that is, P(y=2).
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