The life insurance industry maintains that the average worker
in Saskatoon has no more than $25,000 of personal life
insurance. You believe this to be too
low. You sample 100 workers in Saskatoon at random and
find the sample average to be $26,650 of personal life
insurance. The population standard deviation is known to
be $12,000. Use α=0.05 throughout.
(6) Test your belief using a significance level of 5%.
(6) Explain, in the context of this question, what
is meant by a Type I error,...