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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
Statistics and Probability, Statistics
Suppose a random sample of n = 49 observations is selected from a population that has normal distribution with mean 106 and standard deviation 12. a) Give the mean and the standard deviation of the sample mean X. b) Find ...
42 credit card holders are selected at random. For each, their current credit card balance is recorded. The average for these 42 people is = $600. Assume that the current balance of all credit card holders follows a norm ...
Some commercial aircraft fly with two engines. Assuming that the aircraft can land safely on a minimum of one engine, what is the probability of a catastrophe (non-safe landing due to engine failure) for the life of the ...
Describe in detail each of four risk factors of holding a domestic bond. Your summary should convince the reader that you fully understand each risk factor.
On the production line the company finds that 95.6% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test them. What number of the 30 being incorre ...
A process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 8.2 rotations per minute. If a randomly selected minute has 118 rotations per minute, would the process be considered ...
Suppose a soft drink company want to perform a taste test on 5 brands of diet cola. How many permutations are there for presenting 5 diet colas to test subjects?
Suppose that we take a random sample of 49 people from this segment of the population. What is the probability that the mean number of days of disability of this sample will be greater than 6 days?
A rainstorm in Portland, Oregon, wiped out the electricity in 10% of the households in the city. Suppose that a random sample of 70 Portland households is taken after the rainstorm. Estimate the number of households in t ...
Suppose metal shafts produced have a standard deviation of 2.8 and a mean diameter of 210 inches. If 84 shafts are sampled at random, what is the probability that the mean diameter of the sample shafts would be less than ...
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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