High income countries are classified as having a gdp per capita that is greater than

greater than : $12376 US dollars

Explanation:

According to the World Bank report of  2018 made by using Atlas method, a country with a Gross Capital Income greater than US $12376 is considered as Higher Income Economy country. According to this report there are more than 100 countries which have High Income Economy. Most of the countries comes under this are the members of the United Nations. There are also non UN member countries which reported under this.

a manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. at the end of december, the company wishes to forecast sales for january. the estimate of trend through november has been 200 additional boards sold per month. average sales have been around 1000 units per month. the demand for december was 1100 units. the company uses α = 0.20 and β = 0.10. make a forecast including trend for the month of january.