An economist is interested in studying the incomes of consumers in a particular country. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in a mean income of $15,000. What is the width of the 90% confidence interval?

An income property rents for $1,000 a month. The operating expenses are $3,000 a year. During the past 5 years it has been vacant for 3 months. If an appraiser used a 10% capitalization rate the value of the property would be:

A: $74,951; B: $79,000; C: $84,000; D: $91,000.

What is design for the environment (DFE)? Provide examples of products or services that have been developed with this in mind

What will be an ideal response?