Question

Assuming that:

Answer 1

\[\theta _{1}=1.6\] and \[\theta _{2}=1.4 \] test \[H _{0}: \mu _{1}-\mu _{2}=0\] versus \[H _{a}: \mu _{1}-\mu _{2}>0\] at a 0.1 significance level.

Answer 2

\[\frac{ }{ x }=18.12 \] \[m=40\] \[\frac{ }{ y }=16.87\] \[n=32\] \[\mu _{1},\mu _{2}=\] true average tension band strengths

Answer 3

z hypothesis testing with two populations.