During World War II 12 000 able bodied male undergraduates

Last updated: 6/29/2023

During World War II 12 000 able bodied male undergraduates at the University of Illinois participated in required physical training Each student ran a timed mile Their individual times followed the Normal distribution with mean 7 11 minutes and standard deviation 0 74 minutes One SRS of n 100 of these students had mean time 7 15 minutes Another SRS of n 100 of these students had mean 6 97 minutes After many SRS s the many values of the sample mean would follow the Normal distribution with O a mean x 7 11 minutes but standard deviation cannot be determined from the information given b mean x 7 11 minutes and standard deviation 0 074 minutes O c 7 11 and s 0 074 d mean 7 11 minutes and standard deviation 0 74 minutes