A company wants to establish that the mean life of its batte

A company wants to establish that the mean life of its batteries, when used in a wireless mouse, is over 183 days. The data will consist of the life lengths of batteries in 64 different wireless mice. Formulate the null and alternative hypotheses. If the true mean is 190 days, what error can be made? Explain your answer in the context of the problem.

Solution

a. The test hypothesis is
Ho:=183 (null hypothesis)
Ha:>183 (alternative hypothesis)

b. Tyep II error