Answer:
±0.11
Step-by-step explanation:
I just took the test!
A. The costs from 1995 to 2005 all lower, so the changes are negative
I have the same book Anyway wish I can help , had the same problem but our teacher said not to do fair share IM SO VERY SORRRY I MEAN IT
Answer:
b) equals 20 hours.
Step-by-step explanation:
The sampling distribution of means refers to the distribution of all the possible sample means, with a certain sample size (in this case, n=100) extracted from the population.
The sampling distribution of the means is equal to the population mean. That does not mean that every sample will result in a mean equal to the population, but that the population of sample means will have an average of 20 hours.