For each of the following events, how would an economist using a 10-year-old market basket create a bias in measuring the change in the cost of living today?

a. A typical family owns more cars than it would have a decade ago. Over that time, the average price of a car has increased more than the average prices of other goods.

b. Virtually no households had broadband internet access a decade ago. Now many households have it, and the price has regularly fallen each year.