A Local Eat-In Pizza Restaurant Wants to Investigate the Possibility $H _ { 0 } : \mu = 34$

A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful only if the average time spent on a delivery does not exceed 34 minutes. The owner has randomly selected 19 customers and delivered pizzas to their homes. What hypotheses should the owner test to demonstrate that the pizza delivery will not be successful? A) $H _ { 0 } : \mu = 34$ vs. $H _ { \mathrm { a } } : \mu > 34$
B) $H _ { 0 } : \mu = 34$ vs. $H _ { \mathrm { a } } : \mu < 34$
C) $H _ { 0 } : \mu = 34$ vs. $H _ { \mathrm { a } } : \mu \neq 34$
D) $H _ { 0 } : \mu < 34$ vs. $H _ { a } : \mu = 34$