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In order to fund her retirement, Glenda requires a portfolio with an expected return of 12 percent per year over the next 30 years. She has decided to invest in Stocks 1, 2, and 3, with 25 percent in Stock 1, 50 percent in Stock 2, and 25 percent in Stock 3. If Stocks 1 and 2 have expected returns of 9 percent and 10 percent per year, respectively, then what is the minimum expected annual return for Stock 3 that will enable Glenda to achieve her investment requirement?
a. What is the probability that one randomly selected student scores above 1100 on the GRE? b. Describe the sampling distribution of the sample mean for the 16 students.
Find the distribution of the test statistic when the null hypothesis is true, and then show how to get a test size alpha= 0.10
A study was conducted to determine whether magnets were effective in treating pain. The valves represent pain measurements.
What is the probability that the mean life-span of a sample of 64 randomly selected bulbs will exceed 727 hours?
Twelve doctor's offices were given 3 lab inspections with the following results:
Given a binomial distribution with n=29 and p=0.83, would the normal distribution provide a reasonable approximation? Why or why not.
When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal to
Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000.
At a recent meeting of educational researchers comparison were made between the type of college freshmen attend and the numbers who drop out.
Which of the given signifies difference in two population proportions?
Find the expected value of the number of tests taken.
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