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The MIT-BIT arrhythmia database contains 48 heart signal recordings with 22 and 26 from female and male patients, respectively. For a classification task, an analyst randomlyr selects 36 records for predictive model training and keeps the other 12 records for testing the model performance.
(a) What is the expected number of female patient recordings selected for training?
(b) What is the probability that at least three male patient recordings are selected for training?
(c) What is the probability that the same number of male and female patients are used for testing the model performance?
the recommended retail price of a new cancer drug is 150 per dose. the drug price in a random sample of 16 retailers is
question 1a soft drink manufacturer is using a winning cap as a sales promotion. the purchaser can get a prize if they
The adjusted R 2 was 53%.19 Carefully analyze these results and try to draw a conclu- sion about the effects of the 1985 French Banking Deregulation Act.
Use the Simple Random Sample applet to select a sample of 2 items from a population that contains the numbers 1, 2, 3, and 4. Repeat the process 20 times and record the number of times that a 3 is selected in the sample.
A box contain 9 tickets numbered from I to 9 inclusive. If 3 tickets are drawn from the box one at a time, find the proba bility that they arc alternately either ( I ) odd, even, odd or (2) even, odd, even.
Would you expect the variance to be larger or smaller than the variance associated with the probability function used in the previous exercise? Verify your answer by computing the variance.
1. Unemployed Employed Total No HS Diploma 34 355 389 HS Diploma 93 1899 1992 College Degree 38 A random sample of 3200 adults was obtained and their employment
(a) What is the probability that all eight dice show a 6? (b) What is the probability that all eight dice show the same number?
Public transportation and the automobile are 2 methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
A farmer can purchase 3 kinds of feed for his stock, with various percentages of each of 4 nutrients, called A, B, C, and D. A mixture of feeds gives proportional amounts of nutrients. The following table gives the minimum da..
Risk odds: Wendy adheres to the delta property and has risk odds of 2:1 for a deal where she could win or lose $100.
Construct a scatter plot of the CPI versus inflation for the period 2000 through 2005. Describe the relationship that appears to exist.
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