Question.

.Looking at the average monthly return and standard deviation of S&P/ASX200, can you be 95% confident that this market portfolio will not lose more than 10% of its value in August 2020?

Answer

[R2SD(R), R+ 2SD(R)]

Average return rate =76.53%

Standard deviation is0.05429126

=0.7652577382 *0.05429126

= (0.6667, 0.8738)

Conclusion?

(Note i have half completed this question, i just need help with the final conclusion.