An economics graduate student is studying the gross domestic product growth rate in the United States. It is known that the average annual gross domestic product growth rate in the United States is 0.7 percent. The economics graduate student believes the average annual gross domestic product growth rate in the United States has decreased. What are the hypotheses? Fill in the blanks with the correct symbol (=,,<, or >) to represent the correct hypothesis. Provide your answer below: null hypothesis : $\mu$ 0.7 alternative hypothesis : $\mu$ 0.7