Ask your own question, for FREE!
Mathematics 17 Online
OpenStudy (anonymous):

\[Z=\frac{\bar{X}-\mu}{\frac{\sigma}{\sqrt{n}}}=\frac{11.9-12}{\frac{0.3}{\sqrt{40}}}=-2.11\]

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!