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Using the Cumba database file, develop a model to predict employee salary using employee age, years of experience, and gender. Since gender is nominal, use 0 for male and 1 for female. The Multiple Regression file has already been pre-loaded with the data, so you need only interpret the output. Complete the following tasks:
o State the multiple regression equation.o Interpret the meaning of the slopes in the equation.o Predict the salary for a 40-year-old male employee with 5 years of experience.o At the .05 level of significance, determine whether each explanatory variable makes a significant contribution to the regression model.o Interpret the meaning of the r-squared.o Interpret your findings. What changes would you make to the model, given the results?
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
Compare the differences of Simple random sampling & Cluster sampling using specific examples, and show the pros and cons of each method.
Test at .01 level of significance if mean number of number of calories for Brand A 16 oz. yogurt cups is greater than mean calories for Brand B 16 oz. yogurt cups.
Job Interviews: Based on information from MRINetwork, some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0-31); (0.37); 4 (..
A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000.
Assume that you want to use a 0.05 significance level to test the claim that paired sample data come from a population for which the mean difference is Ud = 0. Find (a) d-, (b) Sd, (c) the t test statistic, and the critical values.
Based on this information, by what factor does the risk of having an accident increase due to driving while intoxicated?
The mean time to download an Google video is 1 minute 30 seconds. Suppose the download time is normally distributed with standard deviation of 20 seconds.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
The post anesthesia care area (recovery room) at St. Luke's Hospital in Maumee, Ohio was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25.
A person has purchased 5 of 1,000 tickets sold in a certain raffle. To determine the 10 prizewinners, 10 tickets are drawn at random and without replacement. compute the probability that he wins at least one prize.
Determine whether the following equations have a solution or not? Apply the discriminant, are the solutions real, repeated real, or complex?
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