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Shuffle an ordinary deck of 52 playing cards. Then turn up cards from the top until the first ace appears. What is the expected value of the number of cards required to produce the first ace?
Calculate the mean, variance, and standard deviation of this distribution.
During the first part of a trip,a canoeist travels 41 miles at a certain speed. The canoeist travels 4 miles on the second part of the trip at a speed 5mph slower. The total time for the trip is 5 hours. What was the speed on each part of the trip..
Probability, Combinations and Permutations : Sampling Without Replacement, A basket contains 4 black, 2 red, and 5 green marbles. A sample of three marbles is drawn
find the amount by which the utility company will have to increase its generating capacity in order to meet the needs of the area at the end of the decade. (Round your answer to two decimal places.)
Use the method of undetermined coefficients to find one solution
A passenger train takes 2 hours less than a freight train takes to travel from Norman to Enid. The passenger train averages 96 km/hr, while the freight train averages 64 km/hr. What is the distance from Norman to Enid?
An airplane flying into a headwind travels 216 miles in 2 hours and 42 minutes. On the return flight, the distance is traveled in 2 hours. Find the airspeed of the plane and the speed of the wind, assuming that both remain constant.
Mr. Brown has 10 black gloves and 12 brown gloves in his closet. He blindly picks up some gloves from the closet. What is the minimum number of gloves Mr. Brown will have to pick to be certain to find a pair of gloves of the same color?
A, B started business with 50000,60000, C joined later after x months invested 70000 and B withdraws before x months to end of the year. Then what is the ratio of their profit?
Explain Stock probability, We have been informed that the stock has gone up 20%. What is the probability of a rise or fall in the GDP?
Permutation and combination to find number of ways
A carpenter is making a brace for a chair. To do so she intersects two pieces of wood to make two sets of vertical angles. The obtuse angles formed are each 145°. What is the measurement of each acute angle formed?
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