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A prevalence survey conducted from January 1 through December 31, 2003, identified 2,000 cases of schizophrenia in a city of 3 million persons. The incidence rate of schizophrenia in this population is 6/100,000 persons each year. What percent of the 2,000 cases were newly diagnosed in 2003?
an online computer retailer sells both desktop and laptop computers. assume that 8 of the computers that the online
Compute the M-W U and test it for significance. What does your decision mean in the context of the exercise?
A student stated that the first-order autoregressive error models ( 12.1 ) and (12.2) are too simple' for business time series data because the error term in period t in such data is also influenced by random effects that occurred more than on..
Most of the following selections were taken from letters-to-the-editors columns of newspapers and magazines. Identify any fallacies that may be committed, giving a brief explanation for your answer.
Suppose we knew that he was late for the visit. What is the probability that he came by train? Suppose we knew that he was not late for the visit. What is the probability that he came by train?
During the war with Iraq in 1991 the Terraco Motor Company produced a lightweight, all terrain vehicle code named "J99 Terra" for the military. The company is now planning to sell the Terra to the public.
The following data represents a random sample of number of shares of a pharmaceutical company's stock traded for 20 days in 2000. 3.99 8.91 10.41 7.53 13.85 5.3 9.7 8.95 12.11 13.26 4.25 8.55 11.6 6.76 27.55 7.72 10.15 4.29 7.25 10.89 A) normally ..
A customer with a trade-in offers the store a $260 cash price for the cabinet. Is that a better deal (for the customer) than the store is offering? On Mary's 16th birthday, her parents invest on her behalf an amount of $5,000 into an account that ..
1. tensile strength tests were carried out on two different grades of wire rod resulting in the accompanying datagrade
What are the values for the Mean Square Treatment (MST) and the Mean Square Error (MSE)? Compute the value of F. Do you Reject or Fail to Reject the Null Hypothesis? State you conclusion.
during a national debate on changes to health care a cable news service performs an opinion poll of 500 small-business
The the steps of hypothesis testing b) sketch the distribution involved, and c) explain your answer to someone who is familiar with the t test for a single sample but not with the t sest for independent means.
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