Question

Census Bureau data shows that the mean household income in the area served by a shopping mall is $72,500 per year. A market research firm questions shoppers at the mall to find out whether the mean household income of mall shoppers is higher than that of the general population.

Answer 1

The null hypothesis states that the population mean is equal to a certain value

H°:U = $72,500

The alternative hypothesis states that the null hypothesis is false (according to the claim):

Ha:U >$72,500

Result:

H°U= $72,500

Ha:U >$72,500