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Given independent random variables with the means and standard deviations below, find the mean and standard deviation of the following random variable: X+2Y
Statistics and Probability, Statistics
Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 5.
Can someone explain this to me? Or draw it out so that I can understand. You may see a problem like the following: a mean score of 20 and SD of 3, and asked what percentage of cases will be between 17 and 23, you would r ...
Describe the steps you took. There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion.
A mental health treatment center wanted to compare group therapy vs. individual therapy. They are interested in the relationship between treatment type (group, individual) and treatment completion (yes/no). What type of ...
What are impacts that flexible work schedules can have on a employee's productivity?
Consider the following random sample of data: 8, 6, -6, 0, -9, 4, -1, 7, 6, 84 a) What is the standard deviation of the sample data? Round your response to at least 3 decimal places. b) If the outlier is removed, what is ...
Only 35% of the drivers in a particular city wear seat belts. Suppose that 20 drivers are stopped at random what is the probability that exactly four are wearing a seatbelt? (Round your answer to 4 decimal places)
Would you actually build a contingency chart for this question or is this just probability basics? Bob sets two battery powered alarm clocks to make sure he wakes up in time for his 8 AM accounting test. Each alarm clock ...
Armstrong Faber produces a standard number-two pencil called Ultra-Lite. The demand for Ultra-Lite has been fairly stable over the past ten years. On average, Armstrong Faber has sold 457,000 pencils each year. Furthermo ...
Project Q costs 240. It provides inflows of 120 per year for three years. The cost of funds is 6%. Find the replacement chain value needed to compare it to a six year project.
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As