Probability sampling relies on the personal judgment of the researcher, rather than chance, in selecting sampling elements

To be valid and enforceable, the option-to-buy must

a. be notarized. b. include a legal description of the property. c. be filed with the county clerk's office. d. include the optionee's signature.

A retailer with sales of $1 million wants to increase its efficiency rating from 20 percent to 30 percent. To what must it reduce selling expenses?

a. $200,000 b. $300,000 c. $400,000 d. $700,000