If the covariance between two investments is zero, the variance of the sum of the two investments will be equal to the sum of the variances of the investments

A broker lists a property for sale at $100,000 with a 5 percent commission, and he later obtains an oral offer from a prospective buyer to purchase the property. The seller indicates to the broker that the offer would be acceptable if it were submitted in writing. Before it can be put in writing, the buyer backs out and revokes the oral offer. In this situation, the broker would be entitled to

A) a commission of $5,000. B) only a partial commission. C) no commission. D) the normal rate of commission.

In addition to labor, to which other variables have learning curves been applied?

What will be an ideal response?