Value of the new score
A sample of n 8 scores has a mean of M 12. One new score is added to the sample and the new mean is found to be M 13. What is the value of the new score?
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Let X and Y be continuous random variables with joint probability density f (x, y) = (1+4xy)/2, for 0 < x < 1 and 0 < y < 1 f (x, y) = 0, otherwise. Compute the marginal density of X & Y.
Design a method that can be used, considering that the only materials available are strong rope and several pieces of wood having various sizes and lengths.
A 20 x 10-9 C charge is at the origin, and a -10 x 10-9 C is at X = 15 cm. At what point or points on the x-axis is the electric potential zero?
Bromine is composed of atoms having mass numbers 79 and 81.calculate the % of each isotope, if the atomic number is79.91? What is the proper isotope notation for the bromine isotope 79if it has gained one electron?
Assume this air flows into a basement room, where it cools to 60 °F at 14.7 psi. How much liquid will condense out, in lbmw/s?
The vertical component of the Earth's magnetic field at this location has a magnitude of 44µT. What is the magnitude of the induced emf between the ends of the beam?
A chemist wants to prepare 0.42 MHCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to makeup 1.63 L of the dilute acid?
Two circuit breakers of the same design each have a failure-to-open-on-demand probability of 0.02. The breakers are placed in series so that both must fail to open in order for the circuit breaker system to fail. What is the probability of system
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