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Research Questions for Correlational and Chi-Square Designs
What types of variables are measured using Pearson coefficient, and what types variables are measured with chi square; I am looking for names of variables (e.g., nominal, interval)?
The result for University X was a mean of 5 hours and an estimated population variance of 2 hours; for University Y; and for University Z. What should you conclude? Use the .05 level. What should you conclude? Use the .05 level.
In the biology class the mean score was 79 with standard deviation 5.
Assume gasoline prices for a region are normally distributed. do the data you obtain provide enough evidence to reject the claim? use 1% level of significance.
In Colorado Springs the newspaper runs mug shots of wanted criminals. The 17% of those published are arrested through information provided to the police. If 200 are published, find the probability that less than 30 are arrested.
The number of girls who attend a summer basketball camp has been recorded for the seven years the camp has been offered.
Difference between the discrete and the continuous random variable.
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
What is the equation for this regression model?
In fitting the simple linear regression model Yi ~ N (α + β xi, σ 2 ) to the following data:
Would it be reasonable to conclude that the population mean is 63 pounds?
Whenever the calculated value of t is equal to or greater than the tabled value of t, for a given number of degrees of freedom, then
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