Lola is in the process of forecasting the sales growth rate for an early-stage venture specializing in the production of durable running shoes. Lola predicts a .2 probability of an 80% growth in sales, a .3 probability of a 60% growth in sales, a .4 probability of a 40% growth in sales, and a .1 probability of a 10% decrease in sales.

What is the Standard Deviation for Lola in the previous problem?

Above 40% Between 30-40% Between 20-30% Below 20%