Normal densities that approximate the densities
Suppose we choose independently 25 numbers at random (uniform density) from the interval [0, 20]. Write the normal densities that approximate the densities of their sum S25 and their average A25.
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A sample of 25 novels has a standard deviation of 9 pages. Find the 95% confidence interval of the population standard deviation. (LET SD be the symbol for standard deviation as in sigma)
Measurements of the power out of the turbine indicate that it is 4 MW. Determine the heat loss from the turbine (Btu/s).
A high school project involves building a model ultralight airplane. Some of the stu- dents propose making an airfoil from a sheet of plastic 1.5 m long by 2 m wide at an angle of attack of 12o.
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Determine the minuimum coeffeicent of static friction between A and B required for A not to slide with respect to B if θ = 23. Friction between the sled and the incline is negligible.
What are the three longest wavelengths for standing sound waves in a 121-cm-long tube that is (a) open at both ends and (b) open at one end, closed at the other?
The acceleration of a particle is defined by the relation A=25-3x^2 where A is expressed in m/s^2 and X in meters. The particle starts with no initial velocity at x=0. Determine position where the velocity is maximum.
A 3-phase 25 kVA, 208 V, 60 Hz, alternator (generator) is operating under balanced conditions and supplies a current of 20 A per phase at 0.8 lagging power factor to a load at rated voltage.
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The nurse is caring for a client with suspected neuroleptic malignant syndrome (NMS). Which of the following findings would support a diagnosis of NMS?
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