Economists in the Statistics Bureau decide to check the CPI substitution bias. To do so, they conduct a Consumer Expenditure Survey in both 2018 and 2019.
The table shows the results of the survey. It shows the items that consumers buy and their prices.
The Statistics Bureau fixes the reference base year as 2018.
Calculate the CPI in 2019 if the CPI basket contains the 2019 quantities.
.
The CPI in 2019 if the CPI basket contains the 2019 quantities is .
Corted

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

answer; automatic fire suppression system;