If brokerage commissions on bond sales decrease, then, other things equal, the demand for bonds will ________ and the demand for real estate will ________

Many people tend to buy multiple cars from the same manufacturer because

A) doing so reduces the asymmetric information problem; consumers have better knowledge of quality. B) doing so reduces the asymmetric information problem; consumers have better knowledge of prices. C) doing so doesn't change the asymmetric information problem but consumers have more information. D) doing so increases the consumers brand loyalty.

When there are two coefficients, the resulting confidence sets are

A) rectangles. B) ellipses. C) squares. D) trapezoids.