d) A Berklee graduate starts a company which helps bands set up video enhancements, and is debating what fee to change customers. She hopes to advertise services for $75/hour, but will do so only if she is at least 90% certain that the average band which does video enhancements spends more than $7000 on its set up costs.
i) Write HA, H0, and the alpha level.
ii) Run a T-test. What is the p-value? Round to the\ 0.001.
d) A Berklee graduate starts a company which helps bands set up video enhancements, and is...