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Suppose that for X = net amount won or lost in a lottery game, the expected value is E(X) = -$0.50. What is the correct interpretation of this value?
A) The most likely outcome of a single play is a net loss of 50 cents.B) A player will have a net loss of 50 cents every single time he or she plays this lottery game.C) Over a large number of plays the average outcome for plays is a net loss of 50 cents.D) A mistake must have been made because it's impossible for an expected value to be negative
In a forest planted in a certain type of pine trees with a height of 1.7 m. For they are 15 years old, grows trees with a height 17.3% per year.
Assuming both retire at 70, and that the interest rate both get on their investments is 10% (compounded annually) who has the most money in their account at age 70? Explain why you pick the answer you pick.
The Complement A of an r-subset A of {1,2...,n} is the (n-r)-subset of {1,2,...,n} consisting of all those elements that do not belong to A. Let M= C(n,r), the number of r subsets and at the same time the number of (n-r)
Suppose you have a cookie stand, and when you charge $3 per cookie box you sell 250 boxes. But when you raise your price to $5 you only sell 120 boxes.
a normal distribution has a mean of 500 a standard deviation of 50. A manager wants to simulate one value from this distribution, and has drawn the number 1.4 randomly. What is the simulated value?
Filling a tank. A water tank has an inlet pipe and a drain pipe. A full tank can be emptied in 30 minutes if the drain is opened and an empty tank can be filled in 45 minutes with the inlet pipe opened.
Evaluate the width of the lake and Show your method of solution. You may use geometric vector
During the first part of a trip a canoeist travels 68 miles at a certain speed. The canoeist travels 19 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 5 hrs. What was the speed on each part of the trip..
Find which two variables have the weakest strength of relationship?
At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 10 cubic feet per minute. The diameter of the base of the cone is approximately 3x the altitude.
Descriptive statistics
An investor invested a total of $2,500 in two mutual funds. One fund earned a 4% profit while the other earned a 25 profit. If the investor's total profit was $78, how much was invested in each mutual fund?
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