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1) Investment A has an expected return of $25 million and investment B has an expected return of $5 million. Market risk analysts believe the standard deviation of return from A is $10 million and B is $30 million (negative returns possible). (a) if you assume returns follow a normal distribution, which investment has a better chance of giving you $40 million in returns. Can you please explain so I understand why the answer is 93% and 88% OR 7% and 12%? Is how would your answer to part a change if you knew there was a skewed distribution?
2) You are trying to get an important new customer to buy a product that you produce. Their decision to buy the product from you will depend primarily upon the speed at which you can produce the product once they have placed an order. Currently it takes you 70 hours to produce the product with a standard deviation of 8 hours. Production times follow a normal distribution. a.) What % of the time can you produce the product within 80 hours? b.)you want to promise that 95% of the time you can deliver the product in under ____ hours. What number should you put in the blank? Assuming the standard deviation stays the same, how much do you have to reduce your average production time so that 95% of the time you can deliver the product in under 75 hours?
Which of the following would produce a new confidence interval with smaller width based on these same data and produce a new confidence interval
Using the 0.05 level of significance, is there evidence that the population mean is above $170?
An average department store sells 350 men's suits per year. The men's suit departments at a particular national chain of stores claim they sell more than the industry average. In 35 of their stores, they sold, on the average, 430 suits per year wi..
An economist is interested in studying the spending habits of consumers in a particular region. The population variance is known to be $1,000,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of th..
What is the point estimate of the students mean salary? What is the point estimate of the standard deviation of the students salaries? Construct a 95% confidence interval for the mean salary of the DM students?
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60%.
A method of determining if relationships exist between two variables is:
You conduct 8 Bernoulli trials for which the probability of success is 0.85. What is the probability that you will obtain exactly two successes?
A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation
Generate a scatterplot for Occupancy Rate (Y) vs. Rent per Sq. Ft. (X). Send this graph to me via email. State the equation of the best fit line. State and interpret the values of bo and b1.
What is a 99% confidence interval for the true proportion of dentists in the population that would make such a recommendation?
Is there a significant difference the four testing conditions?
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