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Make up a multiple regression problem using at least 3 independent variables. Indicate the expected sign (negative or positive) for all slopes and the reasoning behind your hypothesis. For instance if I was going to predict the selling price of a home I might believe the age of the home in years might be a good predictor of the selling price. I could hypothesis that as age increases, selling price would decrease or increase. Whatever I decided, I would explain why I believe the slope would be positive or negative. You do not need to make up data or solve the regression just identify the response variable and all variables considered to help predict this variable even if not used in the final model.
Consider the results of the hypothesis test you conducted above. Which of the two types of errors could you have committed? Explain the ramification of committing such an error in the context of this scenario.
Develop a list of four elements (variables) you would like to use to "measure" the association between exposure to violence and future criminality. Provide a brief explanation of the reasons you chose the variables.
The dependent variable was the child's score on the Behavioral Screening Questionnaire (BSQ), which was filled out by the mother. High BSQ scores indicate more problems. Analyze the difference between means and write a conclusion.
A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and a = 0.01. What are the critical values?
A local restaurant is planning a study on demand for meals over holiday weekends. In calculating the desired sample size for the study, the restaurant's researcher decides to use a rule-of-thumb calculation for estimating the population di..
Solve different inventory control problems using an appropriate OR method.
A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard..
The users, who and w programs all display information about the userids that are currently logged into the system. Do we need three different programs?
What is the role of a defining contrast, or generator, in fractional factorial experiments? Distinguish between a principal fraction and an alternate fraction.
a. Calculate AOQ for p = .01, .02,..., .10. What does this suggest about the value of p for which AOQ is a maximum and the corresponding AOQL?
______1. A motorist claims that the Fargo Police issue an average of 60 speeding tickets per day. A random sample of 100 days showed an average of 65 tickets issued with a standard deviation of 10. Which test should be used?
The classical probability model is based on the assumption of equally likely outcomes. Some care must be shown in analysis to be certain that this assumption.
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