Sale of Air Conditioners
The average number of air conditioners sold in 2015 in a city was 3600 per day. Suppose the standard deviation is 1404 and the distribution is right skewed. Suppose we take a random sample of 81 days in the year.
a. Is the sample size large enough to use the Central Limit Theorem for means? Explain.
b. What are the mean and standard error of the sampling distribution?.
c. What is the probability that the sample mean will be more than 2808 units away from the population mean?