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Find below the data provided in na-bp.sav. Use it to complete the following calculations in SPSS:
(1) Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
(2) Based on the results of #1, is sodium a significant predictor for blood pressure (bp)? Why?
Find out the regression variable that correlates best. Among which regression variable, carbon dioxide or methane correlates best with the earth's surface temperature.
The probability that a bomber hits a target on a bombing mission is 0.700. Three bombers are sent to bomb a particular target.
What can we conclude from these figures at a level of significance of .01?
Provided that the selected student excels in sports, determine the probability that the student is a boy?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
Assume your statistics professor reports test grades as z-scores, and you got a score of 2.20 on the midterm exam. Write down a sentence explaining what that means.
Test the claim that the mean age of the prison population in one city is less than 26 years. Sample data are summarized as n = 25, x = 24.4 years, and s = 9.2 years. Use a significance level of α = 0.05.
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
By using the normal probability distribution, what is the probability the car will be repaired in 35 minutes or less?
The Wilcoxon signed rank statistic, The mean for the Wilcoxon signed rank test and The P-value for the Wilcoxon signed rank test
where p is the binomial probability of returning a completed survey, and log is the natural logarithm. The multiple logistic regression output from fitting this model is given below.
Make use of Excel to determine the right-tail p-value.
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