The average return for largecap domestic stock funds over the three years 2009–2011 was 14.4%. Assume the threeyear returns were normally distributed across funds with a standard deviation of 4.6%. a. What is the probability an individual largecap domestic stock fund had a threeyear return of at least 20% (to 4 decimals)?
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{Exercise 6.17} 1. The mean cost of domestic airfares in the United States rose to an alltime high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard deviation of $110. Save your time  order a paper!Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines Order Paper Nowa. What is the probability that a domestic airfare is $550 or more (to 4 decimals)? b. What is the probability that a domestic airfare is $250 or less (to 4 decimals)? c. What if the probability that a domestic airfare is between $300 and $500 (to 4 decimals)? d. What is the cost for the 3% highest domestic airfares? (rounded to nearest dollar)

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{Exercise 6.18 (Algorithmic)} 2. The average return for largecap domestic stock funds over the three years 2009–2011 was 14.4%. Assume the threeyear returns were normally distributed across funds with a standard deviation of 4.6%.
a. What is the probability an individual largecap domestic stock fund had a threeyear return of at least 20% (to 4 decimals)?
b. What is the probability an individual largecap domestic stock fund had a threeyear return of 10% or less (to 4 decimals)?
c. How big does the return have to be to put a domestic stock fund in the top 10% for the threeyear period (to 2 decimals)?

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{Exercise 6.23 (Algorithmic)} 3. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes and a standard deviation of 8 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)?

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4. {Exercise 6.9} A random variable is normally distributed with a mean of μ = 50 and a standard deviation of σ = 5. a. What is the probability that the random variable will assume a value between 45 and 55 (to 3 decimals)?

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