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Suppose that you work for the child social services agency in your county. Your job is to investigate instances of possible child neglect or abuse.
After collecting your evidence, which may come from a variety of sources, you must decide whether to leave the child in the home or place the child in protective custody.
Specify the null and research hypotheses in this situation. What constitutes a Type I and a Type II error? Is a Type I or Type II error the more serious error in this situation? Why?
bookstores like education one reason being that educated peopleare more likely to spend money on books. national data
Management of the Jackson Manufacturing Corporation wishes to choose a statistical forecasting method for forecasting total sales for the corporation. Total sales (in millions of dollars) for each month of last year are shown below.
In the new poll, if the proportion favoring the incumbent has not changed, what is the mean and standard deviation of the number preferring the incumbent?
payment times of 100 randomly selected cus- tomers this month had an average of 35 days. the standard deviation from
an experiment involves selecting a random sample of 256 middle managers at a random for study. one item of interest is
One measure of the effectiveness of cancer drugs is their ability to reduce the number of viable cancer cells in laboratory settings. In this experiment, the A549 line of malignant cells is plated onto petri dishes with various concentrations of t..
What is the highest confidence level for which you can claim that more Delaware Republicans have read the Constitution than Delaware Democrats?
Do a search using an Internet search engine and discuss some of the many computer algorithms and programs that exist to solve linear programming problems.
in a test of hypotheses a researcher used the level of significance a .05. based on a random sample she obtained a
If he were to conduct a second study to reduce the maximum error of estimate to 6, about how many hard drives should he include in his new sample?
Discuss an example where you would use a test of hypothesis with three or more population means (that can be analyzed using ANOVA technique) at your employment or personal life.
Why do you use the chi-square statistic? What type of data is used with chi square analysis?
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