# Identifying the critical sample Mean value â€“ Sampling distribution

• To reach a final decision, Christos has to make a general inference (about the population) from the sample data
• Criterion: Mean income across all households in the market area under consideration
• If the mean population household income is greater than $19,000, then Christos should introduce the product line into the new market • Christosâ€™s decision making is equivalent to either accepting or rejecting the hypothesis: • The population mean household income in the new market area is greater than$19,000
• The term one-tailed signifies that all z-values that would cause Christos to reject H0, are in just one tail of the sampling distribution
• Âµ -> Population Mean
• H0: Âµ â‰¤ $19,000 • Ha: Âµ >$19,000