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Suppose that in a particular state consisting of four distinct regions, a random sample of nk voters is obtained from the k th region for k = 1, 2, 3, 4. Each voter is then classified according to which candidate (1, 2, or 3) he or she prefers and according to voter registration (1 = Dem., 2 = Rep., 3 5 Indep.d. Let pijk denote the proportion of voters in region k who belong in candidate category i and registration category j. The null hypothesis of homogeneous regions is he proportion within each candidate/registration combination is the same for all four regions). Assuming that H0 is true, determine pijk and eijk as functions of the observed nijk's, and use the general rule of thumb to obtain the number of degrees of freedom for the chi-squared test.
q1. assuming that the data are normally distributed with a mean of 25 and a standard deviation of 1.25 what is the
The test results are shown below. At a = 0.05, can it be concluded that the book scores are higher than the DVD scores?
Look at the most recent Statistical Abstract of the United States (www.census.gov/compendia/statab/) and make a two-way table that provides the counts of deaths due to accidents from various causes for three different age groups. What do you concl..
specify the level of measurement used for each of the following itemsresponse time to flashing imagesrating of job
multiple regression is the method of analysis thata uses sever independent variables to predict the category to which a
Find the minimum sample size needed, using a prior study that found that 36% of the respondents said they have high speed Internet access.
a supervisor in the department of rehabilitive services is critical of the performance of one of her counselors. the
When a pacemaker factory is operating normally (the null hypothesis H0), a randomly selected pacemaker fails a test with probability q0 = 10-4. Each day, an inspector randomly tests pacemakers.
What is the difference between hypothesis and theory? If there is a difference between the two, what comes first - hypothesis or theory?
according to the ioc female participation in the 2000 summer olympic games was 42. a sports-merchandising expert
A random variable has a standard deviation of 16, and an unknown mean. Find the lowest size of a simple random sample so that the sample mean estimates the population mean with a standard error no larger than 0.25.
Policyholders of a certain insurance company have accidents at times distributed according to a Poisson process with rate λ. The amount of time from when the accident occurs until a claim is made has distribution G.
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