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One sample hasn = 5 scores and the second has n = 10 scores. If the pooled variance for the two sample is 30, then what is the value of the estimated standard error for the sample mean difference?
Statistics and Probability, Statistics
You can invest money each month at 6 percent interest compounded monthly over the next 30 years. In 30 years, you will take all the money you invested and put it into an account earning 8 percent compounded monthly. Then ...
Suppose it is known that the response time of healthy subjects to a particular stimulus is a normally distributed random variable with a mean of 15 seconds and a variance of 16. What is the probability that a random samp ...
Determine the type of distribution for the following situation: Draw marbles from a bag which contains 5 red marbles, 6 blue marbles and 4 green marbles with replacement until you get a blue marble. a) Binomial b) Pois ...
A city of flies has a population that doubles once every day. The flies go extinct from overpopulation on the 30th day. On which day was the fly population halfway from extinction?
Calculate the WACC given the following assumptions: a. Company tax rate is 40%. b. Company has an outstanding bond issue with a 6-7/8 coupon, market price of 102-5/8 (percent of 100% par, in 32nds), semiannual coupon pay ...
The Everly Equipment Company's flange-lipping machine was purchased 5 years ago for $70,000. It had an expected life of 10 years when it was bought and its remaining depreciation is $7,000 per year for each year of its r ...
1) It appears that new car purchases have peaked in 2018 vs. used car purchases. The following probability distribution table shows the random variable x, where x is the number of new cars purchased by household during t ...
Researchers randomly assigned 25 beginning students of Russian to begin speaking practice immediately and another 25 to delay speaking for 4 weeks. At the end of the semester both groups took a standard test of comprehen ...
Let's pretend that in a hospital, 7% of patients are "high-risk" while the others are "lower-risk". For patients that are high-risk, 75% will be re-admitted within 30 days. For "lower-risk" patients, the 30day re-admitta ...
What percent of the measurements are found below the 30th percentile? Found above the 30th percentile? For the regression line y^ = 3x + 2 what is the best predicted value if x is 7? Assume that male and female births ar ...
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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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