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Identify the independent and dependent variables in the following descriptions of experiments:
a. Students watched a cartoon either alone or with others and then rated how funny they found the cartoon to be.
b. A comprehension test was given to students after they had studied textbook material either in silence or with the television turned on.
c. Some elementary school teachers were told that a child's parents were college graduates, and other teachers were told that the child's parents had not fi nished high school; they then rated the child's academic potential.
d. Workers at a company were assigned to one of two conditions: One group completed a stress management training program; another group of workers did not participate in the training. The number of sick days taken by these workers was examined for the two subsequent months.
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
Suppose you have information for 650 customers on which of three brands they bought the last time they purchased laundry detergent. What method would you use to test whether or not there was a significant relationship or association between gender..
the independent newspaper tabulated the gender of all candidates running for election in the 1992 british general
There are many examples of data mining methods being applied to business problems. But data mining methods are not only applicable to business problems. You are to research and cite at least three non-business areas where data mining might be frui..
let x be a binomial random variable with p0.5 and n10. calculate the following probabilities from the binomial
one piece of pvc is to be inserted inside another piece. the length of the first piece is normally distributed with a
Question 1: Which of the following items are considered Required Supplementary Information (RSI)?
What is meant by an unbiased estimator? How is bias defined? (b) Draw a figure showing the sampling distribution of an unbiased and a biased estimator.
Following Example 4.21, let X and Y denote the arrival times of the first two calls at a telephone switch. The joint PDF of X and Y is
What does a flat world mean to you in your choice of a major? In your choice of a career? Will you have to be a "lifelong learner"? Why or why not?
an investment company pays 5 compounded semiannually. you want to have 10000 in the future. a how much should you
How do I define the the population and select a simple random sample of size n from the population? A random sample of n=12 values taken from a normally distributed population resulted in the following sample value:
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