College entrance examination follow a normal distribution
Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 550 and a standard deviation of 100. Find the probability that a student will score over 690. Round your answer to four decimal places.
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Find the area under the standard normal curve over the interval z = 0.56 to z = 2.42. Compute probabilities using the standard normal table in Appendix B (Table 3). Round the answer to four decimal places.
A 2100 kg truck traveling north at 41 km/h turns east and accelerates to 51 km/h. (a) What is the change in the truck's kinetic energy? What are the (b) magnitude and (c) direction of the change in its momentum?
A wind farm consisting of a number of windmills, or wind generators, is proposed to produce 25 megawatts (MW) of electrical power. How much wind power needs to be available to produce the rated 25 MW of power?
If 1.50 m^3 of water at 0 degrees Celsius is frozen and cooled to -15 degrees Celsius by being in contact with a great deal of ice at -15 degrees Celsius, what would be the total change in entropy of the process?
Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If the speed of ball 1 was initially 3.00 m/s, and that of ball 2 was 4.00 m/s in the opposite direction, what will be their speeds after the collision?
A Boy standing on the roof throws one ball upward and another one downward with same initial speed. how do the final speeds of the two balls at the moment when they hit the ground? Explain.
A standard solution prepared in the same fashion, containing 5.00 mL of 5.00 x 10-4 M Fe(ClO4)3 and the reagents (no sample) had an absorbance of 0.284.
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