Diego purchased a new black jacket through Amazon. When it arrived, he was disappointed when he opened up the package to discover that the black jacket he thought he ordered was actually dark navy blue. Then he tried on the jacket and realized that the sleeves were too long for his arms. What did Diego probably just experience about his purchase

The correct answer is letter "A": cognitive dissonance.

Explanation:

Social psychologist Leon Festinger (1919-1989) described cognitive dissonance as the situation in which individuals feel discomfort as the result of unmatched expectations and the events that took place. According to Festinger, individuals constantly look for consistency to confirm their beliefs are true. Besides, people tend to avoid inconsistency because they lead to disharmony.

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.