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Assume that advanced students would average 93% on an achievement test and that regular students would average 75% on it.
a. If 100 advanced students and 300 regular students took the test, what would you expect the average to be?
b.How many of each kind of student would be needed to get a group of 90 students who would average 87% on the test?"
Find an equation that describes the position of point P above its rest position as a function of time. Take t = 0 to be the instant when the string is released.
mineral deposits have formed a uniform coating that is 4 millimeters thick on the inside of a water pipe. the cross sectional area has decreased by 10%. what was the original diameter of the pipe?
Given the following table, make a PERT diagram, and determine the project time and the critical path. Provide a justification on how you obtain your project time and critical path.
Suppose that men arrive at a ticket counter according to a Poisson process at the rate of 120 per hour, and women arrive according to an independent Poisson process at the rate of 60 per hour. Determine the probability that four or fewer people ar..
A test consists of 810 true or false questions. If the student guesses on each question, what is the standard deviation of the number of correct answers?
Define the variables, determine the slope and vertical intercept, and write an equation to model this data and evaluate the table of values of earning using the given data.
suppose a one-tailed test is being applied to find out if the population mean is less than 212. The level of significance is .01 and 26 accounts are sampled. What is the critical value?
The price of a technology stock has risen to today. Yesterday's price was . Find the percentage increase. Round your answer to the nearest tenth of a percent.
Prove that a graph G is a forest if and only if every induced subgraph of G contains a vertex of degree at most 1.
The half-life of plutonium-234 is 9 hours. If 70 milligrams is present now, how much will be present in 6 days? (Round your answer to three decimal places.)
Use the mathematical and graphical analyses to determine the equation of the above function if the parabola cross the line y=2x at two points with the x-coordinates 0 and 10. Hint: there is more than one solution.
From the top of a 175 ft lighthouse, the angle of depression to a ship in the ocean is 23°. How far is the ship from the base of the lighthouse? Round your answer to the nearest foot.
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