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

x i	1	2	3	4	5
y i	4	8	6	11	14

Round your answers to two decimal places.

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.