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Given are five observations for two variables, x and y.

x i12345
y i3751213


Round your answers to two decimal places. Use Table 1 of Appendix B.


a.  Using the following equation:

Estimate the standard deviation of ŷ* when x = 3.


b.  Using the following expression:

Develop a 95% confidence interval for the expected value of y when x = 3.

 to 


c.  Using the following equation:

Estimate the standard deviation of an individual value of y when x = 3.


d.  Using the following expression:

Develop a 95% prediction interval for y when x = 3. If your answer is negative, enter minus (-) sign.


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