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What sample size must be taken to estimate the average gas price in houston with 99% confidence and max error of 5 cents? Assume population standard deviation of gas prices is 60 cents.
Statistics and Probability, Statistics
A student is gathering data on the driving experiences of other college students. One of the variables measured is the type of car the student drives. These data are coded using the following method: 1 = subcompact, 2 = ...
In preparing a defense against a hostile takeover, a firm's management assesses the owners of both common and preferred stock with respect to their attitudes toward current management. Of 600 common stockholders, 322 rep ...
A study was conducted concerning the use of glvoes among the nurses with 15 years or more experience. The study showed that only 1/6 of these nurses wear gloves during vascular access procedures. For a sample n=36 nurses ...
A die is rolled four times. What is the probability that the sum of four numbers equals 13?
Can you look for multicollinearity between a categorical independent variable and a continuous dependent variable or can you only look for multicollinearity between a continuous independent variable and a continuous depe ...
A company making refrigerators strives for the internal temperature to have a mean of 37.5 degrees with a standard deviation of 0.6 degrees, based on samples of 100. A sample of 100 refrigerators have an average temperat ...
A random sample of 25 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 12 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the ...
In a certain city, a school administrator hypothesized that students enroll in school within 5 km from their homes. To check this claim you asked 30 student from the said city and you found that the mean distance between ...
Suppose X is a normal random variable with mean μ = 54 and standard deviation σ =8.? Compute P(X > 42). (Round to four decimal places.)
We would like to estimate the true average age of customers for a particular company. How large would the sample size need to be for the margin of error (based on 95% confidence) to be 1 year? Suppose that, based on prev ...
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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