The average price for a theater ticket in a certain city in 2017 was $109.51. A random sample of 28 theater ticket prices in the city in 2018 had a sample mean of $115.39 with a standard deviation of $43.72. a. Do we have evidence that theater ticket prices in the city changed from the 2017 price? Use a significance level of 0.05. b. Construct a 95% confidence interval for the price of a theater ticket in the city. How does your confidence interval support your conclusion in part (a)? a. Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H = $109.51 O B. Ho: H # $109.51 O C. Ho: H > $109.51 Ha: H > $109.51 Ha: H = $109.51 Ha : US $109.51 O D. Ho: H