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Question: In November 2010, a "tiger summit" was held in St. Petersburg, Russia.28 In 1900, there were 100,000 wild tigers worldwide; in 2010 the number was 3200.
(a) Assuming the tiger population has decreased exponentially, find a formula for f(t), the number of wild tigers t years since 1900.
(b) Between 2000 and 2010, the number of wild tigers decreased by 40%. Is this percentage larger or smaller than the decrease in the tiger population predicted by your answer to part (a)?
What is the area of a paper label that is to cover the lateral surface of a cylindrical can 3.00 in. in diameter and 4.25 in. high?
A rectangular garden is going to be fenced in as shown below to enclose 112ft squared. if the outside fence costs $3 per foot and the interior costs $1 per foot, what are the dimensions that minimize cost.
The relationship between the numbers of calculators x a company sells per day and the price of each calculator p i given by the equation x = 1300-100p. At what price should the calculators be sold if the daily revenue is to be $4,000?
The projected number of Americans age 65 and older for the years 1995-2030 can be modeled by the equation N(x)= 0.03x^2+0.315x+34.23 million people, where x is the number of years after 2000.
Do you agree with the assumption of the neoclassical model that human behavior is rational and self-interested? Can you think of some examples of economic behavior that might contradict these assumptions?
Give an example of two 4x4 nilpotent matrices which have the same minimal polynomial (they necessarily have the same characteristic polynomial) but which are not similar.
View an example on how to use StatCrunch (with data) to do hypotheses tests for a population proportion. Write down the null hypothesis. Write down the alternative hypothesis. Explain why you chose your hypotheses as such
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Suppose time spent on email for employees in a normal work day is independent and normally distributed with an average of 57 minutes and standard deviation of 12 minutes. What is the standard deviation of the sample mean in a random sample of n = ..
Write an equation and solve: Modern Electronics is selling a large screen television for $999. This is $120 more than the price at a catalog store. Find the price at the catalog store.
Gravel is being dumped from a conveyor belt at a rate of 50 {rm ft}^3{rm /min}. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile i..
When constructing confidence intervals, there is always a trade-off between the confidence level and the precision of estimate. Which one do you think is more important and why? (Max 3 sentences).
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