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Imagine that the (arithmetic) mean mark on the first Sadistics [sic] midterm was 96% (there was no extra marks were available on the exam, so the maximum possible score was 100%). The second Sadistics [sic] midterm consists of one question:
Was the median mark for the first midterm 94% or 98%?
Which of these two options is most sensible and why?
a sample was drawn of one-acre plots of land planted with corn. the crop yields were recorded. calculate the
If the random sample of 16 men does result in a mean score of 590 is there strong evidence to support the claim that the course is actually effective? why or why not?
Compute the probability of randomly selecting s club, or spade, or diamond. (C) Compute the probability of randomly selecting a jack or heart.
In a standard test for reaction time, female candidates for flight school are found to have times that are normally distributed with a mean of 0.65 seconds and a standard deviation of 0.15 seconds.
What is wrong with the following inference, and write a correct inference: "We proved that Harry cannot tell the difference between cotton and rayon fabrics.
What is a frequency table? Describe an example where a frequency table can be used in life.
Suppose that f, g, h are three functions defined on (a, b) and c (a, b). Assume that f and h are differentiable at c, f(c) = h(c), and f(x) g(x) h(x) for all x (a, b).
Computer stocks currently provide an expected rate of return of 16%. Dell, a large computer company, will pay a year-end dividend of $2 per share.
What are the correlations of all the explanatory variables with GPA? Explain why knowing the correlations tell us which variables will best predict GPA in a regression with just one explanatory variable. What are the two best predictor variables? ..
A national computer retailer believes that the average sales are greater for salespersons with a college degree. A random sample of 34 salespersons with a degree had an average weekly sale of $3622 last year, while 31 salespersons without a colleg..
What is the head circumference such that only 2.5% of adult males have a smaller head circumference?
the desired percentage of sio2nbspin a certain type of aluminous cement is 5.5. to test whether the true average
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