Question

A random sample of 500 measurements on the length of stay in hospitals had sample mean 7.3 days and sample standard deviation 3.3 days. A federal regulatory agency hypothesizes that the average length of stay is in excess of 7 days. Use α = 0.05.

Using the rejection region from a test to determine whether the data supports the regulators claim, calculate β when  μ_a = 7.4.

(Round your answer to four decimal places.)

Answer 1