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Suppose X and Y are independent. Let X have the mean 3 and Y have the mean 2. Find the covariance of X+Y and X-Y
Statistics and Probability, Statistics
Determine the sample size n needed to construct a 99?% confidence interval to estimate the population mean when σ=24 and the margin of error equals 9.
A clinical psychologist is the primary therapist for 18 patients. She randomly selects a sample of 3 patients to be in her study. How many different samples of this size can be selected from this population of 18 patient ...
Let x = age in years of a rural Quebec woman at the time of her first marriage. In the year 1941, the population variance of x was approximately σ 2 = 5.1. Suppose a recent study of age at first marriage for a rand ...
6 year, 8% coupon bond with semi annual payments, Par Value = $1000. 1) Find out price of the bond if YTM = 10%. 2) What happens to the bond price if YTM decreases 1 basis point? 3) Is the effect of 1 basis point decreas ...
Suppose that X 1 , X 2 , ..., X 100 is a sample from a normal distribution whose Sample Mean has a N (3,3) distribution. What is the population distribution? (note: specify parameters of the distribution)
A chemical company is interviewing two people to become its risk manager. One has a background of management positions chemical refineries. The other has a background providing risk management consulting services to depa ...
Many restaurants and eateries are now posting calorie counts on their menus. We wonder if providing the calories results in customers ordering fewer calories than when the calories are not provided. We will use data from ...
How would I calculate this :The personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews. From the past records, they have found that the length of a first i ...
A binomial process has 892 trails and a probability of success of 0.78. What is the standard deviation of this process distribution?
Mort is to pay off a loan of $75,000 with equal payments at the end of every month over 10 years (i.e., 120 months). The ANNUAL effective rate is 5%. Mort decides that he can actually manage to pay double the monthly pay ...
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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