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1) Consider 70% for training dataset and 30% for validation dataset and fit a regression model using training dataset and apply all the concepts which were covered
2) Once the final model is done.Find the predicted values for validation dataset using the model obtained by training dataset.Compute R square and Root Mean Square and compare these values with R square and Residual Standard error obtained by the training model.
a) Checking whether linear regression modeling is appropriate for a problem at hand,
b) Developing a linear regression model when appropriate and
c) Validating a developed model.
Assume the population standard deviations are the same. At the .10 significance level, can we conclude that the annual rates of return are higher on the big board?
in a bumper test three types of autos were deliberately crashed into a barrier at 5 mph and the resulting damage in
For the constant sound group: 1, 10, 1, 10, 1, 9, 7, 3. And for the no sound group: 4, 3, 6, 4, 5, 8, 4, 9. A. Assume that the standard deviations are equal and find the test statistic for the test that the between mu1 and mu2 is zero.
suppose a machines life time in years can be moldeled with an exponential distribution with rate of lambda 14.a.
there are many consulting organizations that predict whether increases in stock prices will be unusually low unusually
The profit from each type of dealership, given the availability of gas is shown in the following payoff tableCompact Cars $300000 $150000. Construct a decision tree for the situation described above and indicate the best decision.
To set up a decision rule, the sampling distribution is divided into two regions – a region of non-rejection and a region where the null hypothesis is rejected.
Assume the arrival of these emails i3 approximated by the Poisson distribution.
the local county is considering a budget proposal that would reallocate funding to renovate the city pools. a survey is
Distinguish between the types of audits that might be used for each process. Recommend the audit most appropriate for each process.
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
in an effort to lure vacationers to exotic locations several vacation packages to world-class golf destinations such as
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