Lisa wants to determine if graduates from her college earn different incomes than do graduates from college in general. To test this, Lisa surveys 1,000 graduates from her college and finds that the...

Lisa wants to determine if graduates from her college earn different incomes than do graduates from college in  general. To test this, Lisa surveys 1,000 graduates from her college and finds that the average income is $40,000 (s = 5,000). If the average income is $45,000 for graduates in general, do the incomes of the graduates from Lisa's college differ significantly? Use an alpha of .05 and a two-tailed test. Complete all 4 steps of hypothesis testing.