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Despite his success in 1936, George Gallup failed miserably in trying to predict the winner of the 1948 U.S. presidential election. His organization, as well as two others, predicted that Thomas Dewey would beat incumbent Harry Truman. All three used what is called quota sampling. The interviewers were told to find a certain number, or quota, of each of several types of people.
For example, they might have been told to interview six women under age 40, one of whom was African American and the other five of whom were Caucasian.
Imagine that you are one of their interviewers, trying to follow these instructions. Whom would you ask? Now explain why you think these polls failed to predict the true winner and why quota sampling is not a good method.
What is the probability that each of the 30 students will get a computer in working condition?- find out what the increase or decrease should be for each of the three alternatives.
What are the lower limit and upper limit of the confidence interval? Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
last weeks sales of imac computers at an apple store in oklahoma city ok are shown in the following tabledaysales
Why did Gorbachev choose the United Nations as his forum for this speech? What did Gorbachev mean by "de-ideologizing relations among states? What implications did this have for superpower relations?
starting salaries of 70 college graduates who have taken a statistic course have a mean of 42823 and a standard
Think of an important characteristic that you would look for in a potential romantic partner, such as humorous, intelligent, attractive, hardworking, religious, and so on.
An experiment consists of randomly choosing 4 radios. (The order is not important.) Find the probability that all 4 of the chosen radios are defective.
1. State the Null Hypothesis and the Alternative Hypothesis
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the ..
organizations interested in making sure that accused persons have a trial of their peers often compare the distribution
an assembly line maufactures engines where the probability that a given engine is defective is .10. assuming that the
Show that X(t) is WSS, but not strict sense stationary. Hint: For the latter case consider E[X3(t)] . - Find the PSD of this process.
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