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"In 2007 a study of 231,000 New Jersey heart attack patients showed that those admitted on a weekday had a 12% chance of death within 3 years compared with 12.9% admitted on a weekend."
What are the possible statistical pitfalls of this? (may have more than one response)
Fidelity Investments' February 2007 prospectus compares the value of $10,000 invested in the S&P 500 versus its value invested in Fidelity's.
How far do rich parents take us? How much education children get is strongly associated with the wealth and social status of their parents.
If a survey of 109 randomly selected united states residents is to be taken, what is the approximate probability that at least 60 will be under 31 years of age?
Determine the greatest acceleration with which the 1-Mg forklift can raise the 750kg crate withour causing the wheels at B to leave the ground. the centers of mass for the forklift and the crate are located ar G1 and G2 respectively.
He finds their mean weight to be 17.78 ounces with a standard deviation of 0.4 ounces. Are the cereal boxes lighter than they should be? Let α = 0.01.
A coworker of yours is very pleased, having just found an R2 value of 100%, indicating that the regression equation has explained all of the variability.
Suppose that the mortgage payments of all homeowners have a normal distribution. What is the mean monthly mortgage paid by all homeowner?
a researcher is evaluating the effectiveness of a speed-reading course. a standardized test measuring both speed and
a manufacturer of automobile purchases machine bolts from a supplier who claims that no more than 5 of suppliers bolts
There are three cards in a box. Both sides of one card are black, both sides of one card are red, and the third card has one black side and one red side.
Let N(t) be the number of accidents at a specific intersection in the interval [0,t]. We suppose that {N(t),t ≥ 0} is a Poisson process with rate λ1 = 1 per week. Moreover, the number Yk of persons injured in the Kth accident has (approximately) a ..
suppose iq scores were obtained from randomly selected siblings. for 20 such pairs of people the linear correlation
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