The following sample observations were randomly selected. (Do not round the intermediate values. Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.)


x: 5 2 3 6 10
y: 5 5 5 7 7

a. Determine the 90% confidence interval for the mean predicted when x = 8.



b. Determine the 90% prediction interval for an individual predicted when x = 8.