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Examine the effect of the sample size. Refer to the previous exercise. Assume a variety of different scenarios where the sample size changes but the proportion in the sample who work 10 or more hours a week during the school year remains the same.
Write a short report summarizing your results and conclusions. Be sure to include numerical and graphical summaries of what you have found.
Compare the mean and standard deviation of the actual distribution of your 50 sample proportions for 20 tosses to what the theoretical sampling distribution model says the mean and standard deviation should be.
suppose n80000 n20000 and s50.a. compute the standard error of x using the finite population correction factor. round
Given an input dictionary read in from a file to use for all test cases, and several word search grids, identify all words from the dictionary that appear in each word search grid.
A control system for a chemical concentration control system is shown in Figure P9.11. The system receives a granular feed of varying composition, and we want to maintain a constant composition of the output mixture by adjusting the feed-flow valv..
What is the probability of the sum of the numbers on the dices to be 8 or larger?
Mr. Bacon has been wondering if he could predict the first year's box office revenue if he knew several things about a film:
Given some of the applications of the business exercises presented in Chapter 6, how you can apply matrix methods to your own personal or professional scenarios? Provide an example of a real or hypothetical system of linear equations that you woul..
Range of 0 to 5 Volts. An environmental effect, such as a change in ambient temperature, lowers the sensitivity by 2%. What span error does this generate?
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order auto-regressive model.
Donna Shader, manager of the Winter Park Hotel, is considering how to restructure the front desk to reach an optimum level of staff efficiency and guest service. Determine the average amount of time that a guest spends checking in
Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring? Suppose P(X1) = .75 and P(Y2|X1) = .40. What is the joint probability of X1 and Y2?
Use the sign test to determine if the medicine has an effect on blood pressure. What is the p-value?
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