City records indicate that the average age of the houses on the west side of town is 43 years, with standard deviation 23 years. These records also in

City records indicate that the average age of the houses on the west side of town is 43 years, with standard deviation 23 years. These records also indicate that 30% of west-side houses are made of brick. A construction company plans to send an advertising brochure to 196 randomly selected west-side houses. Use a normal curve to estimate the probability that the average age of the houses receiving the brochure is greater than 45 years.

Posted in Uncategorized