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

x_{i -} 1, 2, 3, 4, 5

y_{i -} 4, 8, 5, 12, 14

(a)

to estimate the standard deviation of*

whenx=5.

(b)

Use*t_/2s_*

to develop a 95% confidence interval for the expected value ofywhenx=5.

(c)

Uses_pred=s...

to estimate the standard deviation of an individual value ofywhenx=5.

(d)

Use*t_/2s_pred

to develop a 95% prediction interval forywhenx=5.