Foot length: 22.0 cm; 90% confidence. Use the paired data consisting of foot lengths (cm) and heights

Question:

Foot length: 22.0 cm; 90% confidence. Use the paired data consisting of foot lengths (cm) and heights (cm) of the 40 people listed in Data Set 2 of Appendix B. Let x represent foot length and lety represent the corresponding height. Use the given foot length and the given confidence level to construct a prediction interval estimate of height.