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The margin of error for polling results is typically determined as the half-width of a 95% confidence interval. With respect to a particular ballot proposition, a random sample of 423 voters indicated 51% support and 49% oppose the measure. What is the margin of error? Interpret the result.
Which measure of central tendency would you use to summarize the data below? Which inferential test would you use to determine if there is a difference in rainfall between the sample 2 and 3?
Can you please derive the mean and variance of a RV X, which has a Poisson distribution.
If 16 measurements are taken and the standard deviation is 2.1 mg/dl is there enough evidence to support the claim that her standard deviation is greatear than the target at a = 0.01?
Define correlation. Then give an example of a misleading correlation and an example of a meaningful correlation. With this describe the relationship between correlation and causation.
What is approximately the largest sample mean of another sample of n= 16 participants you would expect to obtain from this finite population?
You manufacture and sell an iron rod whose electrical conductivity is supposed to be 10.1. You plan to make 6 measurements of the conductivity of a rod you plan to sell.
Assuming the population variances from both offices are equal, is there evidence of a difference in the mean waiting time between the two offices? Use α = 0.05
In 1851 there were 25,466 nurses in Great Britain. Find the probability that a British nurse selected at random in 1851 would be 60 years or older. (My guess is The sum of the percent of nurses 60 years are older are added equaling 36% or 1967.76/2..
The standard deviation of the time to complete the entire homework assignment
Find the P value or an interval containing the P value for the sample test statistic.
The random variable X has which of the following probability distributions and What is the probability that no student wins
We have already been introduced to sensitivity analysis via the geometry of a simple example. We saw that the values of the decision variables and those of the slack and surplus variables remain unchanged even though some coefficients in the objec..
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