A city commissioner in Brownsville believe his police officers
are underpaid compared with a neighboring town. A random sample of
17 police officers in Brownsville has a mean annual income of
$35,800 and a standard deviation of $7,800. In Greensville, a
random sample of 15 police officers has a mean annual income of
$35,100 and a standard deviation of $7,375. Test the claim at
α = 0.01 that the mean annual income in
Brownsville is less than Greensville. Assume the...