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Question: The position of an aircraft relative to an observer on the ground is estimated by measuring its distance r from the observer and the angle θ that the line of ed Values sight from the observer to the aircraft makes with the horizontal. Suppose that the measurements, denoted by R and , are subject to random errors and are independent of each other. The altitude of the aircraft is then estimated to be Y = R sin .
a. Find an approximate expression for the variance of Y .
b. For given r, at what value of θ is the estimated altitude most variable?
a) Identify and explain the shadow prices for each of the resource constraints. b) Which of the resource constraints profit the most and why?
Generalize the above to a Monty Hall problem where there are n = 3 doors, of which Monty opens m goat doors, with 1 = m = n - 2.
If the scientists want to cut the margin of error in half, how many deer must they inspect?
What is the expected life of the switch?- What is the standard deviation of the life of the switch?- Find the probability that the switch will last at least 1200 hours.
the following data lists the average monthly snowfall for january in 15 cities around the us20 13 15 28 16 25 2 1435 42
The binomial distribution approaches normality as N increases. Explain how this relationship is useful for solving binomial problems involving N > 20. What are the advantages and disadvantages of this approach?
One set of 12 pairs of scores, X and Y values, produces a correlation of r = 0.90. If SSy = 200, find the standard error of estimate for the regression line.
determine the values of c so that the following function represent joint probability distributions of the random
In a study of nursing home patients, the following data were obtained for each patient; age, gender, previous smoking status (smoker or nonsmoker).
Compute the nonresponse rate for this study. Does this influence how you interpret these results? Write a short discussion of this issue.
A researcher observes that, compared to students who do not procrastinate, students who admit to frequent procrastination are more likely to miss class.
A study was undertaken to assess how both majority and minority groups perceive the degree of participation of African-American models in television commercial.
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