The city wishes to estimate the average commute distance for all city employees. They collect a random sample of 88 employees and find a sample mean of x = 8.2 miles. The city wants to estimate , the average commute distance for all city employees with 95% confidence. Check the conditions for performing a one-sample t -interval. Select two answers The sample is a random sample and representative of the population The sample size is sufficiently large so the sampling distribution should be approximately normal The population distribution is approximately normal so the sample size does not matter The sample is biased and should not be used to represent the population