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The median for different sample sizes. Refer to the previous exercise. Use the Mean and Median applet to explore the median for 5, 7, 9, and 11 observations. Write a short paragraph explaining what you have learned from this exercise.
Write an explanation to such a person about how polls can get a good idea of how the entire population will vote by asking a relatively small number of voters.
Use w = 0.3 and w = 0.8 to produce an exponential smoothing model for these data. Which value of w produces better forecasts? Explain.
Assert with probability of at least 0.95 that the error of her estimate will not exceed 0.07. How large a sample, n, will she require if she has no idea what the true proportion is.
A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they were drained. In what ways would this information be useful to the manufacturer?
For each of the following datasets, explain whether you would expect the mean or the median of the observations to be higher:- In a rural farming community, for each household the number of children is measured.
A local company is going to replace its legacy system with an eHR-based solution to improve recruiting and hiring efforts, both internally and externally.
Each researcher uses his or her sample to compute a 95% confidence interval for the proportion who have blue eyes in the population. About how many of the confidence intervals will cover the population proportion?
the texas corporation has four oil fieldsfour refineries andnbsp four distribution centers in the locations identified
suppose x has a poision distribution with a mean of .4. determine the following probabilitiesa
Pitcher's elbow is a repetitive use injury of the medial epicondyle. What do the muscles that attach to the medial epicondyle control? How would you adapt this experiment to test these muscles?
What are the differences between correlation and regression? What are the common pitfalls of using regression modeling?
Sketch the distributions involved, and (c) explain your answers to someone who has never had a course in statistics.
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