1. What are the assumptions underlying the proper use of the t test? 2. Which of the following two..

1. What are the assumptions underlying the proper use of the t test?

2. Which of the following two statements is t echnically more correct? (1) We are 95% coni dent that the population mean lies in the interval 80–90, or (2) We are 95% c oni dent th at th e in terval 8 0–90 c ontains th e population mean. Explain.