Assume that number of cases of COVID-19 per day in a city are normally distributed. A sample of 31 days revealed the average number of cases to be 472 with a population standard deviation of 33. Round your answer for part (a) to the nearest whole number. (a) What is the point estimate for the population number of cases of that city per day? Round your answer for part (b) to 3 decimal places. (b) What is the critical value that will need to be used to calculate a 95% confidence interval? Round your answers for part (c) to the nearest whole number. (c) What is the 95% confidence interval for the number of COVID-19 cases per day