In bollinger band why is it that a contrarian sell when the price reaches upper band and long term investor sells when the price breaks out the lower band

Consider the investment in the following table: Start of Year 1 One share purchased at $100 End of Year 1 $5.00 dividend/share paid and one additional share purchased at $125 End of Year 2 $5.00 dividend/share paid and both shares sold for $140 per share Assuming dividends ...

An investment in 10,000 common shares of a company for one year earned a 15.5% return. The investor received a $2,500 dividend just prior to the sale of the shares at $24 per share. The price that the investor paid ...

If the hpr is 1.22% in 1 month what is the EAR please show the calci steps via tvm mode