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The average return for large-cap domestic stock funds over the three years 2009-2011 was 14.8%. Assume the three-year returns were normally distributed across funds with a standard deviation of 4.8%.
a. How big does the return have to be to put a domestic stock fund in the top 10% for the three-year period (to 2 decimals)?
q1. assume that two independent random samples of size 100 each are taken from a population that has a variance of 36.
question the calculations for a factorial experiment involving four levels of factor a three levels of factor b and
determine whether the probabilities are computed using classical methods empirical method or subjective method.a- the
Over many years of administering tests to my statistics students I have found that the overall average of the scores on the first exam that I give each semester is 76.
A student is taking a 10 question multiple choice quiz. There are four possible answers to each question. The student decides to guess at random on all 10 questions.
A national water expert is interested in determining the average amount of lead (in ppm, parts per million) that is found in the Houston, Texas drinking water. To conduct her research, she considers only those residential households within the city l..
On which test did he do better compared to the rest of the class?
Define the standard error of the mean. What happens to the standard error as the sample size increases? Explain
The average age for all medicare patients in the USA is 75. A sample from a clinic shows that the average age of the clnic medicare patients is 78.
a popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal
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1 in a sequence of 10 independent bernoulli trials where the probability of success is .4 what is the expected number
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