1. Identify problem 2. explain how figured out

4) Suppose that replacement times for washing machines are normally distributed with a mean of 10.9 years and a standard deviation of 1 years. If only 18% of washing machines lasts longer than Samsung, find the replacement time for a Samsung washing machine. 5) The National Association of Realtors estimatest that 23% of all homes purchased in 2004 were considered investment properties. If a random sample of 800 homes sold in 2004 is obtained, what is the probability that at most 25% of those are used as investment property