Question

A financial analyst constructs a statistical model to represent the market shares of several similar companies. She then collects data over the next month to evaluate her model. At the end of the month, she finds that for one of the companies, the difference between her model and the data is 5%.

She decides to collect data for an additional two months. If her model is valid, what could she expect from the total data collected after three months?

Answer 1

i need help

Answer 2

where ss