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The average return for large-cap domestic stock funds over certain three years was 7.2%. Assume the three-year returns were normally distributed across funds with a standard deviation of 2.2%. What is the probability an individual large-cap domestic stock fund had a three-year return of 5% or less?

Question

The average return for large-cap domestic stock funds over certain three years was 7.2%. Assume the three-year returns were normally distributed across funds with a standard deviation of 2.2%. What is the probability an individual large-cap domestic stock fund had a three-year return of 5% or less?

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Step 1

Given that average return for large-cap domestic stock funds over three years is normally distributed.

Mean = 7.2% 

Standard deviati...

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