Answer: The new confidence index is 0.7143
Explanation: Consumer confidence index which is known as the confidence index is an index used for estimating the economy of the U.S, it is published by the conference board which shows the decree of excitement in peoples's activities on their savings and spendings.
To calculate the new confidence index;
STEP1: Add the bond increase to the current bond;
6% + 1% = 7%
4% + 1% = 5%
STEP 2: FIND THE NEW CONFIDENCE INDEX
5% ÷ 7% = 0.7143
The old confidence index can also be calculated as
4% ÷ 6% = 0.6667