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Compute the correlation coefficient for the data below
X values -5 -1 1 2
Y values 3 -1 -3 3
A/ 0.641
B/ 0.453
C/ - 0.411
D/ - 0.123
Using a 0.01 level of significance, test the claim that the tutoring has an effect on the math scores.
the following are body mass index bmi scores measured in 12 patients who are free of diabetes and participating in a
frans convenience marts are located throughout a metropolitan area. fran the owner would like to expand into other
Determine whether there is a difference in the mean weights of candies of different colors. Use the .05 significance level.
A purchasing agent for a national chain of seafood restaurants wants to estimate the mean weight of shrimp in a large catch. How many shrimp should be sampled from the catch to be 95% confident that the sample mean will be off from the actual mean we..
Galvanizing lines that are assumed to operate independently. What is the probability that none of the lines experiences a surface finish problem in 40 hours of operation.
A tetrahedron is a fully-symmetric pyramid-like solid, with four faces made up of equal-sized equilateral triangles. Suppose that the four faces contain different number of spots, from one spot to four spots, so that the tetrahedron may be rolled ..
Cars arrive at a toll booth at a mean rate of five cars every 10 minutes according to a Poisson process. Find the probability that the toll collector will have to wait longer than 26.30 minutes before collecting the eighth toll.
Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks such as problem solving ( Linde & Bergstroem, 1992).
Construct a 99% confidence interval for the difference in the probabilities of getting a fracture for non-cola drinking and cola drinking kids.
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
Suppose a stock analyst wants to determine whether there is a difference in the mean rate of returns for three types of stock - utility, retail, and banking.
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