The average cost of a one-bedroom apartment in a town is $650 per month. What is the probability of randomly selecting a sample of 50 one-bedroom apartments in this town and getting a sample mean of less than $630 if the population standard deviation is $100?
Answer to relevant QuestionsThe Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 51 households is monitored for one year to determine aluminum usage. If the population standard deviation ...The U.S. Bureau of Labor Statistics released hourly wage figures for various countries for workers in the manufacturing sector. The hourly wage was $30.67 for Switzerland, $20.20 for Japan, and $23.82 for the U.S. Assume ...Give a variable that could be used to stratify the population for each of the following studies. List at least four subcategories for each variable.a. A political party wants to conduct a poll prior to an election for the ...A small lawnmower company produced 1,500 lawnmowers in 2005.In an effort to determine how maintenance-free these units were, the company decided to conduct a multiyear study of the 2005 lawnmowers. A sample of 200 owners of ...A random sample of 81 items is taken; producing a sample mean of 47. The population standard deviation is 5.89. Construct a 90% confidence interval to estimate the population mean.
Post your question