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Question: In a simple random sample of 1,500 voters, 55% said they planned to vote for a particular proposition, and 45% said they planned to vote against it. The estimated margin of victory for the proposition is thus 10%. What is the standard error of this estimated margin? What is an approximate 95% confidence interval for the margin?
suppose x the number of flaws in a roll of polyethylene insulated cable follows a poisson process where ? is 1.1 flaws
Suppose that you were to read the following news story: "Researchers compared a new drug to a placebo for treating high blood pressure, and it seemed to work.
Researcher asked group of 30 students - 12 of them supported change, 13 of them didn't, and 5 had no opinion. This is not binomial model as?
Compare the approximate 95% confidence intervals you found in parts (a) and (b), and comment on whether you think male and female faculty members in the population differed on this question.
Compute the first quartile the third quartile and the interquartile range.List the five-number summary.Construct a boxplot and describe its shape.
1. an international marketer has said when political instability increases the price of quality increases. think about
Classify each random variable as discrete or continuous.- The number of boll weevils in one acre of a Louisiana cotton farm.- The volume of ice cream in one scoop.
iven an infinite population with a mean of 75 and a standard deviation of 12, the probability that the mean of a sample of 36 observations taken at random from this population exceeds 78 is?
the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
where phi = golden ratio. What is the long-term fraction of time the chain spends in each of the states? Answer must be gotten without a calculator.
Find a hyperplane H(α, β) strictly separating x from S; i.e., x is in the interior of H +(α, β), and S is in the interior H -(α, β).
a bank manager wanted to double-check her claim that recent process improvements have reduced customer wait times to an
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