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You have purchased five shares of stock in Diversified Machine Tools which has a mean value of $25 and a standard deviation of $9, and 10 shares in Northwest Foods, Inc. which has a mean value of $40 and a standard deviation of $11. The correlation between the two stock prices is -0.40.
a. Calculate the expected value of your portfolio.
b. Calculate the expected standard deviation of your portfolio.
c. What would be the difference in the expected standard deviation of your portfolio if the prices of the two stocks were independent?
A researcher want to estimate the mean shoulder height of both male and female bears within 0.25 centimeters. Determine the minimum sample size required to construct a 99% confident interval
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We can assign probabilities to values of using the normal density curve with mean 0.30 and standard deviation 0.023. Use this density curve to find the probabilities of the following events.
Discuss the assumptions of this model. Specifically, how does each variable affect demand? How do the variables influence each other? What limitations might this model have? How can it be improved?
The appropriate probability concepts and your application of them to find resulting data to limit the uncertainty within this business decision.
What is the real world value of the y-intercept and slope in a regression equation? Other than statistics problems, why should I care?
Quality Control A quality inspector checked for imperfections in rolls of fabric for one week. The random variable x represents the number of imperfections found.
Likert scale- based questionnaire & responses for 30 respondents showing the number of respondents for each respond option
The person's body fat percentage, and ‘y' is the person's lean mass percentage. Predict the lean mass for a person who is 27 years old and has a body fat percentage of 4.5%.
A researcher used stepwise regression to create regression models to predict BirthRate (births per 1,000) using five predictors: LifeExp (life expectancy in years), InfMort (infant mortality rate).
Standard deviation of 0.04135 (4.135%). Treating the next 12 months as a random sample, what is the probability that the mean rate of return will be positive?
What is the probability of choosing a yellow candy, what is the probability that the candy is blue, red, or green and what is the probability of choosing an orange candy?
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