Question 1181976
This is a z-test, and assuming normality and random samples, the critical value will be z>1.645 with a one-way test.
z=(30000-24500)/5928/sqrt(34)
=5500*sqrt(34)/5928
=5.41
strongly reject the null hypothesis and conclude the average household income has increased.
p-value << 0.0001 (about 6 x 10^(-8))