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To estimate a population parameter (such as the population mean or population proportion) using a confidence interval first requires one to calculate the margin of error, E. Why will there always be errors when using a sample to estimate a population? It is possible to use a sample to estimate a population parameter with 100% accuracy? Explain.
Assuming that there is no other evidence, what is the probability that the driver arrested by the police is innocent of the robbery?
the number of chocolate chips in an 18 ounce bag of chocolate chips os approxiamately normally distributed with a mean
the following regression model has been computed based on a sample of twenty observations 34.2 19.3x. the first
Marilyn is a statistician who works for a company that manufactures components for sound systems. Two development teams have each come up with a new method.
Suppose that the amounts that students at a college spend on textbooks this semester have a normal curve with mean µ = $360 and standard deviation s = $120.
use the given data to find the minimum sample size required to estimate a population or proportion or percentage.margin
Consider only the winning times for men. Is there evidence of a linear trend? If so, propose a straight-line model for predicting winning time (y) based on year (x). Would you expect the slope of this line to be positive or negative?
the table gives population densities for ring-necked pheasants in number of pheasants per acre on pelee island
in a batch of 8000 clock radios 8 are defective. a sample of 12 clock radios is randomly selected without replacement
Using a 95% confidence interval, estimate the percentage of all registered voters planning to vote.
Compute the skewness for your data set using Pearson's
in conjunction with the housing foreclosure crisis of 2009 many economists expressed increasing concern about the level
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