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On standard IQ tests, the mean is 90 and the standard deviation is 16. The results are very close to fitting a normal curve. Suppose an IQ test is given to a very large group of people. Find the percent of people whose IQ score is more then 90.
what is the distance between the origin and the point (5,-19)? if necessary, round your answers to two decimal places.
Yankee found and ate three more than one half of the remaining biscuits. finally, murray ate three more than one half of the remaining biscuits. how many dog biscuits were in the box originally?
A poll of 60 students found that 37% were in favor of raising tution to build a new math building. The standard deviation of this poll is 5%. What would be the standard deviation if the sample size were increased from 60 to 253?
The marketing research department for a company that manufactures and sells computers established the following price function : p(x)=2200-55x
If you have 609 feet of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?
Compute the Initial Value Problem, Let G be a bipartite graph partitioned into vertex sets V and W. Assume all vertices have the same degree. Show G has a perfect matching.
The upper left-hand corner of a piece of paper 8 in. wide by 12 in. long is folded over to the righthand edge as in the figure. How would you fold it so as to minimize the length of the fold? In other words, how would you choose x to minimize y?
Find all the zeros of the function and write the polynomial as a product of linear factors. Use a graphing utility to graph the function as an aid in finding the zeros and as a check of your results. (If you have a computer algebra system, use it ..
Examples of the product rule of exponents: Sometimes when students see the rule they want to write it as 4^2 + 4^3 = 4^5. Can you explain why this does not work?
Air is being pumped into a spherical balloon at a rate of 20 cubic feet per second. At what rate is the radius of the balloon increasing at the instant when the radius equals 15 feet?
Determine if this argument is correct, using symbolic logic and a truth table. If it is not correct, explain what is wrong with the argument, and change the minor premise to make a correct argument.
A pilot can fly an MD-11 2160 miles with the wind in the same time as she can fly 1920 miles against the wind. If the same speed of the wind is 30 mph, find the speed of the plane in still air.
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