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Suppose that a survey of 100 individuals who live in the western region of New York was conducted. The party affiliation (Democrat, Independent, Republican)
The Tastee-Yummy Dog Bone Company has developed four new commercials for their line of flavored dog cookies
The production department of NDB Electronics wants to explore the relationship between the number of employees who assemble a sub-assembly
Show that X^2 has an F1,p distribution, ie. an F distribution with 1 and p degrees of freedom.
Senator Hayes is considering a a run for the U.S. presidency, but she is only 35 years of age, which is the minimum required age.
A recent article in Business Week listed the "Best Small Companies." We are interested in the current results of the companies' sales and earning
Are Confidence intervals part of descriptive statistics or inferential statistics- why? Why would we use confidence intervals instead of point estimates?
At the January national sales meeting, the CEO of Kimble Products was questioned extensively regarding the company policy for paying commission
General K. is concerned about sexually transmitted disease (STD) among the troops. In random inspection of 100 soldiers, 31 were found to have a venereal
According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form.
Compare the models, moving average, exponent smoothing, classical decomposition, regression with time series and regression with causal variables
What are the standard deviations of the returns for stocks A and B? Suppose you want to use this history as a guide to making an investment decision
How could you use descriptive statistics in your personal life?
Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set
Discuss a statistical methods.Discuss the goals of two statistical methods.
The joint density of X and Y is given by
Using the pooled variance you calculated in question # 1, what is the t value for the t test that compares the AIC levels of the treatment group to the control
The following data show that trailing 52 week primary share earnings and books values as reported by 10 companies(the wall Street Journal, March 13/2000).
Can this student reject a null hypothesis that there is no difference in quality scores between the two groups of units?
A seven year old study reported that women whose mothers used the drug DES during pregnancy were twice as likely to develop tissue abnormalities
Pregnancies: normally 268 days is the mean and a stan.dev. of 15 days. If we say a baby is premature if born at least 3 weeks early, what % are born prematurely
What was the research question? How did the statistical test address and answer the research question?
Using the mean and standard deviation computed in part 9a) as estimates of the mean and standard deviation of salary for the population
With more then a million teachers set to retire we are seeing a record number of turnovers in the teaching profession.
A quality characteristic of interest for a tea-bag-filling process is the weight of the tea in the individual bags.