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A standard screening test for Down's syndrome is based on a combination of maternal age and the level of serum alpha-feroprotein. Using this test 80% of Down's syndrome cases can be identified at birth, while 5% of normals are detected as positive.
a. What is the sensitivity and specificity of the test?
b. Assume that 1/500 births have this genetic condition. What is the percentage of births who test positive using this test will actually have the condition?
a biologist has two brine solutions one containing 3 salt and another containing 12 salt. how many millimiters of
The heights of a certain species of plant are normally distributed, with mean 23 cm and standard deviation 1 cm. What is the probability tha a plant chosen at random
Which of the following is not a necessary assumption underlying the use of the one factor between-subject Analysis of Variance technique?
1i let fxlnx3 sketch the mirror line of yx on the axes. sketch fx on the axes.ii indicate the domain and range of
The problem that I'm having is that there is a nonconstant factor of (x^2+y^2+z^2)^(-1/2) appearing on the RHS of this equation, making it non-trivial to solve.
Calculate whether or not the given point is a solution to the system and write the system in non-matrix form
generalize be moivres procedure in problem iiiof his textto solve problemiv to find how many trials are necessary to
The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard deviation of 0.44° F. What temperature represents the 95th percentile?
A study showed that there are 17 vehicles for every 10 households. how many vehicles are there for 106 million households?
A car is traveling at 100 km/h when the driver sees an accident 80 m ahead and slams on the brakes. What constant deceleration is required to stop the car in time to avoid a pileup?
At what rate is the base of the triangle changing when the altitude is 11.5 centimeters and the area is 86 square centimeters?
the wind in 3 hours and travel the same distance against the wind in 8 hours. What is the speed of the wind?
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