# The hypothesis tests for the correlation coefficient- and the coeffici.docx

3 de Feb de 2023
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### The hypothesis tests for the correlation coefficient- and the coeffici.docx

• 1. The hypothesis tests for the correlation coefficient, and the coefficient of determination will always produce the same conclusions. True False If we are sampling from a normal distribution to conduct a hypothesis test, then our sampling distribution will only be normally distributed if our sample size is 30 or more. True False The ________ is another term for the variance of the sample data. total sum of squares mean square within mean square total mean square between total sum of squares mean square within mean square total mean square between Solution a). False, Because correlation coefficient is r and coefficient of determination is r^2
• 2. b)A common problem faced by statisticians is calculating the sample size required to yield a certain power for a test, given a predetermined Type I error rate ? so this is False c). mean square total