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A new gene scan is developed to detect a certain type of cancer. It is studied in 100 patients who also have the gold standard of a biopsy done. Of the 100 patients studied, 70 turn out to have the cancer. The blood test detects the cancer in 60 of these patients. For the 30 who do not have cancer, the blood test is negative in 20 of them. The sensitivity of this test is?
Why did trade in West Africa change in the 16th and 17th Centuries? Who controlled trade at the West Africa coast?
The data in Table 8.3 are a subset of the data obtained by Featherston (1971). Among other things, he was interested in the relationship between the weight of tapeworms (Taenia hydatigena) fed to dogs and the weight of the scoleces recovered from ..
A study was conducted to determine whether a relationship existed between certain shareholder characteristics and the level of risk associated.
Minorities the NAACP claimed that in Volusia County, Florida, police stopped dark-skinned drivers on I-95 who were not violating the law much more frequently.
find the values of t that bound the middle 0.8 of the distribution for df 25. give your answers correct to two decimal
What is the median sugar content?- What is the range of the sugar contents of these cereals.- Describe the shape of the distribution.
Draw the histogram for these data using an initial class boundary of, an ending class boundary of , and classes of equal width.
below are two groupsa 15 22 19 25 16b 32 25 27 33 21 35 30a test to see if the variances are the same give the null and
Find the graduation rate for males who went to preschool, and compare it with the graduation rate for males who did not go to preschool.
A social psychologist records the number of outbursts in a sample of different classrooms at a local school. Based on the statement below.
the average expenditure on valentines day was expected to be 100.89 usa today february 13 2006. do male and female
Is there any evidence that the true mean decibel level produced by smoke alarms in this city is less than 85? Use a = 0.01 and compute the p value to draw a conclusion.
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