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An investment portfolio has equal proportions invested in five stocks. The expected returns and standard deviations (both in percent per year) are (8, 3), (5, 2), (12, 8), (7, 9), (14, 15).
What are average return and standard deviation for this portfolio?
The following data lists the number of hours spent working during the previous week. From these data round the relative frequencies to three decimal places.
The estimated miles per gallon ratings of a class of automobiles are normally distributed with a mean of 12.8 and a standard deviation of 3.2. What is the probability that one of these automobiles selected at random would get:
it takes annie an average of 60 sec. to solve a rubiks cube. you come in with a rubiks cube and mix it all up and ask
suppose that the probability that a person between the ages of 19 and 24 checks their daily horoscope is 0.12. if 400
the national science foundation nfs condust its survey of earned doctorates sed of all individuals receiving research
What is the point estimate for the difference between the means of the two populations?
how does the horsepower and weight affect the mileage of family sedan ? data from a sample of 20 2010 family sedans
below are the ages of people arrested on theft charges at a mississippi county jail. for this sample calculate the
The formula h(s) = -32s2 + 400s + 8 models a rocket's height, h, in feet, s seconds after launching. Find the height, h(s), five seconds after launch.
many teens have posted profiles on sites such as facebook and myspace. a sample survey asked random samples of teens
He is expected to satisfactorily service 10 patients per day at an hourly wage of $8. Which dental hygienist would be the better hire? Why?
A population has a mean=83 and a standard deviation=9. Find the mean and standard deviation of a sampling distribution of sample means with sample size=81.
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