A sample of 25 pieces of laminate employed in manufacture of circuit boards was selected, and the amount of warpage (in.) under particular situations was determined for each piece, resulting in sample mean warpage of 0.0625 and sample standard deviation of 0.0068.
(a) Compute a prediction for the amount of warpage of single piece of laminate in way which provides information regarding precision and reliability. (Employ a 95% prediction interval. Round your answers to four decimal places.)
Answer to A is (0.0598344, 0.0651656) Stuck on part b
(b) Compute an interval for which you can have a high degree of confidence that at least 95% of all pieces of laminate result in amounts of warpage which are between the two limits of interval. (Employ a 99% tolerance interval. Round your answers to four decimal places.)