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The winner of the Texas Lotto has decided to invest $50,000 per year in the stock market. Under consideration are stocks for a petrochemical firm and a public utility. Although a long-range goal is to get the highest possible return, some consideration is given to the risk involved with the stocks. A risk index on a scale of 1-10 (with 10 being the most risky) is assigned to each of the two stocks. The total risk of the portfolio is found by multiplying the risk of each stock by the dollars invested in that stock. The following table provides a summary of the return and risk:
Stock Estimated Return Risk IndexPetrochemical 12% 9Utility 6% 4
The investor would like to maximize the return on the investment, but the average risk index of the investment should not be higher than 6. How much should be invested in each stock? What is the average risk for this investment? What is the estimated return for this investment?
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
a supplier contract calls for a key dimension of a part to be between 1.88 and 2.12 cm. that is a part will not be
a sample of four tires is taken from alot of brand-a tires. another sample of four tires is taken from a lot of brand-b
The mean value of her net gain/loss will again be $2000? What if she repeats the experiment 10 times? Respond to at least two of your classmates' postings.
Suppose the national average for all young adults is 3.7 hours, and the magazine wishes toclaim that their subscribers exercise more on average. State the relevant hypotheses to test this claim. Specifically define any symbols you use.
Use a calculator with mean and standard deviation keys to verify that the sample mean is x = 5.63 pups with the sample standard deviation s = 1.78 pups. (b) Find a 75% confidence interval for the population.
Critically discuss how someone may use measures of central tendency, variation, or position in their home, school, or workplace.
1. a study of commuting times reports the travel times to work of a random sample of 17 employed adults in new york
Consider a Poisson distribution with a mean of two occurrences per time period.
four separate awards excellence in academics excellence in teaching excellence in departmental service excellence in
1. Calculate the least square estimates of the intercept and slope of the regression line of Y on X. 2. Specify the regression equation using your calculated estimates.
Draw a normal probability distribution (bell curve) on a piece of paper and mark the center line (mean). (no need to send me the sketch-just tell me your answer.
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