A random sample of 25 waiting times (in minutes) before patients saw a medical professional in a hospital's
minor emergency department had a standard deviation of 0.7 minute. After a new admissions procedure was
implemented, a random sample of 21 waiting times had a standard deviation of 0.5 minute. At a = 0.10, can you
support the hospital's claim that the standard deviation of the waiting times has decreased?
State your Hypothesis
Determine decision rule
(critical value method)
State Significance Level of the test and
explain what it means.
Determine the statistical model (test