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A researcher is interested in estimating the percentage of US residents without health insurance. How large a sample is needed so that the maximum margin of error of a 95% confidence interval is no greater than 1%?
Statistics and Probability, Statistics
What steps do I take to calculate "Suppose x has a distribution with a mean of 40 and a standard deviation of 28. Random samples of size n = 64 are drawn. (the - next to the x indicates that the - is over the x in the qu ...
A factory makes parts for laptop computers, including screws. The screws are required to have the right length. The lengths of the screws obey a normal distribution with mean μ=4.25 millimeters and standard deviation σ=0 ...
Rework problem 25 from section 4.1 of your text involving a car saleswoman. Assume that showing a car is a Bernoulli trial, and each time she shows a car, there is a probability of 0.05 that the customer will buy the car ...
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 ...
List the three assumptions of the independent groups t-test. The consequences of violating which assumption are exacerbated if you have unequal N
A random sample of 86 eighth grade? students' scores on a national mathematics assessment test has a mean score of 292. This test result prompts a state school administrator to declare that the mean score for the? state' ...
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 project has an initial outlay of $4,623. It has a single payoff at the end of year 3 of $8,869. What is the net present value (NPV) of the project if the company's cost of capital is 12.43 percent?
1. Define and discuss how to develop the Free Cash Flow forecast? 2. Define and discuss how to develop the Terminal Value? 3. Define and discuss how to develop the Discount Rate?
The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.5 ounces. You randomly select 25 cartons. What is the probability that their mean weight is greater ...
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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
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