Final answer:
The correct null and alternative hypotheses to investigate if the problem is less severe among homeowners in these cities are H0: p ≥ 0.28 and HA: p < 0.28.
Step-by-step explanation:
To determine if the problem of homeowners experiencing difficulty in making mortgage payments is less severe among homeowners in these cities, we need to set up the correct null and alternative hypotheses.
The correct null hypothesis (H0) would state that the proportion (p) of homeowners in these cities experiencing difficulty is equal to or greater than the overall proportion of Canadian homeowners (0.28). Therefore, the correct null hypothesis is H0: p ≥ 0.28.
The correct alternative hypothesis (HA) would state that the proportion (p) of homeowners in these cities experiencing difficulty is less than the overall proportion of Canadian homeowners (0.28). Therefore, the correct alternative hypothesis is HA: p < 0.28.