You get hired as a server at a local restaurant, and the manager tells you that servers’ tips are $42
on average but vary about $12 (m = 42, s = 12). You decide to track your tips to see if you make a
different amount, but because this is your first job as a server, you don’t know if you will make
more or less in tips. After working 16 shifts, you find that your average nightly amount is $44.50
from tips. Test for a difference between this value and the population mean at the a = .05 level of
significance.