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Suppose that if a presidential election were held today, 53% of all voters would vote for candidate Smith over candidate Jones. (You can substitute the names of the most recent presidential candidates.) This problem shows that even if there are 100 million voters, a sample of several thousand is enough to determine the outcome, even in a fairly close election.
a. If 1500 voters are sampled randomly, what is the probability that the sample will indicate (correctly) that Smith is preferred to Jones?
b. If 6000 voters are sampled randomly, what is the probability that the sample will indicate (correctly) that Smith is preferred to Jones?
Let Yi Y2 ··· Y48 be the order statistics of a random sample of size 48 from a distribution of the continuous type. We want to use the observed interval (y4 , y45 ) as a lOOy percent tolerance interval for 75 percent of the distribution.
The rate of defects among CD players of a certain brand is 1.1%. Use the Poisson approximation to the binomial distribution to find the probability that among 240 such CD players received by a store, there is at most one defective CD player.
Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.
Problem: Let (X, Y) be jointly distributed inside the ellipse given by {(x, y) : ax2 + by2 = 1}. Find the marginal densities of X and Y and the conditional densities of Y given X and X given Y. Are X and Y correlated? Are they independent?
Month and standard deviation of $35, which of the following would be the highest individual rent that you might expect to find?
Describe what happens when the sample standard deviations get smaller and discuss the effects of decreasing the sample size
The U.S. government spent more than $2.5 trillion in the 2006 fiscal year. How is this incredible sum of money spent? The following table provides broad categories which demonstrate the expenditures of the Federal government for domestic and defen..
Explain how you would go about selecting this sample using various sampling techniques - Determine the sample size necessary to estimate
The average public elementary school has 450 students. assume the stand deviation of the distribution is 99. if a random sample of 36 public elementary schools is selected, find the probability that the number of students enrolled is between 445 a..
What is the probability that you end up with an A? (Enter your answer to three decimal places.)
Why then does it matter whether we assume straight-line or MACRS depreciation when we assess project NPV?
21st Century Insurance Company claims that telephone calls for policy holder information are answered in at most 3 minutes. A random survey of 36 phone calls results in the mean 3.3311 and standard deviation 2.1788.
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