Question: The number of unhealthy days based on the AQI (Air Quality Index) for a random sample of 10 metropolitan areas is shown below. Assume the data is normally distributed. Construct a 95% confidence interval for the population mean number of unhealthy days based on the AQI (Air Quality Index). You will need to decide whether the normal distribution or the t-distribution applies. You will need to find the sample mean and sample standard deviation first.

61 12 6 40 27 38 93 5 13 40