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Fit a multiple linear regression model for predicting the hospital duration using age, sex, body temperature, white blood cell counts, antibiotic use, blood culture and service (medication vs. surgery) Use a cut off value of 0.10 to assess the significance of the predictors. Identify all significant predictors. Assess the model fit for the multiple linear regression model using appropriate statistics and graphics. With this identify outliers and influential observations using appropriate statistics that can be generated in SPSS
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
A survey taken in a restaurant shows the following number of cups of coffee consumed with each meal. Construct an ungrouped frequency distribution.
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
Test the hypothesis that no difference exists between the groups at α = .05 and perform and report all related tests and statistics.
Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.
Determine the probability that a randomly selected teacher earns more than $525 per week?
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
A random sample of 15 paired observations has a correlation of -.46. Can we conclude that the correlation in the population is less than zero? Use the .05 significance level.
Find the mean and standard deviation of X, the number of students in class, who will develop influenza.
Questions based on binomial distribution, variance of the binomial distribution, discrete random variable and continuous random variables.
One of the most important uses of a correlation is its potential use in_________
A chance sample of 50 families revealed an average or median of $112,000 and a standard deviation of $40,000. What is the standard error of the average or median?
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
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