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Consider an economy with two types of firms, S and I. S firms all move together. I firms move independently. For both types of firms,

Consider an economy with two types of firms, S and I. S firms all move together. I firms move independently. For both types of firms, there is a 66% probability that the
firm will have a 26% return and a 34% probability that the firm will have a -5% return. What is the volatility (standard deviation) of a portfolio that consists of an equal
investment in:
a.18 firms of type S?
b.18 firms of type I?
a. What is the volatility (standard deviation) of a portfolio that consists of an equal investment in 18 firms of type S?
Standard deviation is , o.(Round to two decimal places.)
b. What is the volatility (standard deviation) of a portfolio that consists of an equal investment in 18 firms of type I?
Standard deviation is -%.(Round to two decimal places.)
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