CThe purpose of the study is to determine if the population mean (), representing the null hypothesis, is equal to 280 and, if the alternative hypothesis, the population mean is less than 280. The sales associate's claim was that the average mean of cost per square foot for houses being sold in the Pacific region was less than $280 but he wanted to have a new advertisement to state it was $280. He believed that advertising this information would boost sales prices and in return increased the average mean of $280. Based on the research, it was determined that the null hypothesis should be rejected due to the low p-value. ompare the relationship between the p value 0.0101 and significance level .05