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A company studying the productivity of their employees on a new information system was interested in determining if the age (x) of data entry operators influenced the number of completed entries made per hour (y) the regression equation is y=14.374 - 0.145. if s = 14.04 and s(y) = 2.61 then the correlation coefficient between age and productivity is
What is the chance that the number who say "yes" in a properly drawn random sample of 500 will be smaller than 360?
Discuss the issue of statistical power in non-parametric tests (as compared to their parametric counterparts). Which type tends to be more powerful? Why?
Multiple regression and correlation analysis provides a means for examining the relationship between of two (2) or more independent variables and the dependent variable.
collect cumulative data for all u.s. major carriers for the time period of january 2006 through december 2012. the data
Demands for an item are part of a poisson process and are made on a warehouse 3 times per day. What is the probability that on a given day this item is requested:
Find out annual break-even volume for the Rolling Creek Textile Mill.
a person has 12 friends and will invite 7 to a party.a how many choices are possible if al and bob are fueding and will
The proportion p1 of all imported autos sold to 25-40 age group is greater than or equal to the proportion p2 of imported autos sold to over 40 age group?
If researchers want to take a new sample of size 55, what will be the standard deviation of the distribution of the sample mean?
A test consists of multiple-choice questions, each having four possible answers (a,b,c,d) one of which is correct. Assuming that you guess the answers to six such questions.
the average prices for a product in 12 stores in a city are shown below.2.99 2.15 3.25 3.55 3.00 2.99 2.66 3.50 3.20
Downs and Abwender (2002) found neurological deficits in soccer players who are routinely hit on the head with soccer balls compared to swimmers, who are also athletes but who are not regularly hit in the head. Is this an example of an experimenta..
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