Question: Given are five observations for two variables, x and y . (Round your answers to two decimal places.) x i 3 12 6 20 14

Given are five observations for two variables, x and y. (Round your answers to two decimal places.)

xi

 3 12 6 20 14

yi

 60 35 55 15 15

(a)Estimate the standard deviation of

*=?

when

x = 8.

(b)Develop a 95% confidence interval for the expected value of y when

x = 8.

--------- to ----------

(c)Estimate the standard deviation of an individual value of y when

x = 8.--------?

(d)Develop a 95% prediction interval for y when

x = 8.

-----------------to----------

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