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As a bonus, students are encouraged to research new and interesting articles/ websites/ interactive tools, etc. which are pertinent to the class material. In order to earn extra credit in this way, the website/ article must be new, and must be something that is not easily found by "Googling" the section title. (ie. a wikipedia site on Parametric Curves would not be acceptable)
A new machine has just been installed to cut and rough-shape large slugs. The slugs are then transferred to a precision grinder. One of the critical measurements is the outside diameter.
What is the standard error of estimate? Describe with an example. What are the coefficients of the linear regression model and what do they mean? What are the various statistics reported in a regression output?
The following ANOVA summary data are the result of a regression with sales per year (dependent variable) as a function of promotion expenditures per year (independent variable) for a toy company.
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
Find historical information on the statisticians who developed statistical tests, such as the normal distribution, Student t distribution, Chi-Square distribution
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
When sampling is done for the proportion of defective items in a large shipment, where the population proportion is 0.18 and the sample size is 200, what is the probability that the sample proportion will be at least 0.20?
A researcher uses hypothesis test to estimate H0 µ= 80. Which combination of factors is most probable to result in rejecting null hypothesis?
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
Given the following revenue and cost function for a business firm, calculate the break-even quantity, total revenue, total cost and total profit at break-even level of production.
Recognize and explain potential threats (up to 3) to external validity.
What are the theoretical parameters for the sampling distribution based on these 40 trains? Assume you are dealing with an infinite population of trains.
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