Question 4 10 10 points according to investment

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Question 4 10 / 10 points According to Investment Digest ("Diversification and the Risk/Reward Relationship", Winter 1994, 1-3), the mean of the annual return for common stocks from 1926 to 1992 was 16.5%, and the standard deviation of the annual return was 19%. a. What is the probability that the stock returns are greater than 0%? b. What is the probability that the stock returns are less than 18%?
Question 5 10 / 10 points Match the term to its definition.
__2__ Cluster __3__ Population __1__ Stratum 1. A category composed of people with certain similarities, such as gender, race, religion, or even grade level. Each person belongs to only one group. A simple random sample of equal size is taken from each group. 2. A division of the population into separate physical units such as districts, neighborhoods, or streets. Each person belongs to only one unit. A simple random sample is taken from the units. All people within the selected units are surveyed.

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