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Sensitivity is the ability of a test to correctly identify people who have a health problem. In reviewing a study that considered the sensitivity of a particular screening test for HIV, the nurse found 21 true positives, 853 true negatives, 3 false positives, and 5 false negatives. What is the sensitivity of this test? What is the sensitivity of an early pregnancy urine test kit? What is the sensitivity of a point of care testing machine for Hemoglobin A1c taken with blood from a finger stick?
Find an equation of the tangent line to the graph of: f(x)=x/x^2+1 when x=0 Simplify as much as possible. Using formula Y-Y0=f'(X0)(X-X0)
Ten years ago, 53% of American families owned stocks or stock funds. A sample of 300 observations collected by the Investment Company Institute indicate
Your task is to respond to her statement and, in doing so, explain why it is appropriate to find the probability for specific ranges of values for a continuous.
A group of students collected data at the Cedar Point amusement park and reported that the "wait time" to ride the "Top Thrill Dragster" roller coaster is consistently distributed within a range of 40 minutes to 90 minutes.
Let X be a normal random variable with a mean of 20 and a standard deviation of 4. Find P(X
Criticize the following definitions in light of the eight rules for lexical definitions:- A carpenter's square is a square used by a carpenter.
Assume that all conditional expectations and covariances involved are well-defined and finite so that there are no technical issues of this type to worry about.
in a study subjects are randomly assigned to one of three groups control experimental a or experimental b. after
What is the probability that heads shows on the up face fewer than two times?
In a two-tail hypothesis test, if you use .10 level of significance what is the decision rule for rejecting a null hypothesis that the population mean is 500 if you use the Z test?
Merta reports that 74% of its trains are on time. A check of 60 randomly selected trains shows that 38 of them arrived on time. Find the probability that among the 60 trains 38 or fewer arrive on time.
Why would it not make sense to find the correlation or to perform linear regression with this data set? Explain.
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