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Question: As we noted a few chapters ago, the Pew Research Center (www.pewresearch.org) reports that they are actually able to contact only 76% of the randomly selected households drawn for a telephone survey.
Which of the models of this chapter (Geometric, Binomial, Normal) would you use to model the number of successful contacts from a list of 1000 sampled households? Explain.
Suppose that a random sample of 14 cars shows an average speed of 24.0 mph, with a sample standard deviation of 2.2 mph. Assume that the speeds of cars are normally distributed. Using the T-table, what is the p-value?
The answer was finding the length and width of a rectangle. The results were x= 3 and x= -4. Neither the length or width can be a negative number. However, 3 did work in the original equation."
Brake Pads- A brake pad manufacturer claims its brake pads will last for 38,000 miles. You work for a consumer protection agency and you are testing this manufacturer's brake pads.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What are the lower and upper limits of the confidence interval?
In general, on what basis are independent variables selected for entry into the equation during stepwise regression?
In [0, 1] with Borel σ-algebra B, let µ( A) = 0 for all A ∈ B of first cate- gory and µ( A) = +∞ for all other A ∈ B. Show that µ is a measure, and that if ν is a finite measure on B absolutely continuous with respect to µ, then ν ≡ 0. Hint: See §..
both of which imply that MBAs have an advantage in being promoted. - Can you derive the probabilities in Equation (4.15)? Can you shed any light on this "paradox"?
An experiment was carried out to assess the impact of the variables x1 = force(gm), X2 = power (mW), x3 = temperature (C) and x4 = time (msec) on y = ball bond shear strength (gm). The results are given in the problem 5 Excel data file.
calculate a probabilty of getting 2 aces or 2 kings
what is the probability that you will need to wait for more than a minute before observing the next arrival?- What is the probability you will need to wait at least two minutes?
If an auction house is selling products to risk neutral buyers, which of the types of auction would you recommend? If you are a potential buyer, what might your strategy be? Support your answers using economic analysis learned in this course.
What is the base rate for lung cancer in men over a lifetime?- What is the approximate lifetime risk of getting lung cancer for men who smoke?
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