Inflation and Money — ?End of Chapter Problem For each scenario, determine which…

Inflation and Money — End of Chapter Problem
For each scenario, determine which bias is preventing a price index constructed 15 years ago from measuring the true cost of living.
a. A typical family owns more cell phones and fewer landline telephones than it did a decade ago. The average price of a cell phone plan is lower than that of a residential line.
The bias represented in this scenario is
b. Very few households had high-speed internet connections 15 years ago. Now most households have it, and the average price has fallen each year.
The bias represented in this scenario is
c. Over the last 15 years, personal computers have gotten faster and acquired many new features that enable users to perform many more tasks.
The bias represented in this scenario is