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Independent?
About 12% of boys and 19% of girls in a school wear glasses.
If we select a student at random, are the event that the student is a girl and the event that the student wears spectacles independent or associated?
Statistics and Probability, Statistics
Phillips owns 25 % of Mintor, Inc. (a private company). In 2007, Mintor had sales of $22,00,000, had net income of $82,000 and Mintor paid $32,000 in dividends. If Phillips uses the Equity Income method, what did Phillip ...
Doctor wants the estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confidence assuming o=18.2? Suppose the doctor would b ...
If two samples A and B had the same mean and sample size, but sample A had a larger standard deviation, which sample would have the wider 95% confidence interval?
1. A fencer attends a fencing tournament. To ensure the equipment works well, he takes three blades. Two of them will be the backup. The probability of his three blades to function properly are 0.95, 0.8, 0.7 respectivel ...
Suppose that a fair, 6 sided die is rolled. Let X indicate the event that an odd number is rolled (in other words, X = 1 if an odd number is rolled and X = 0 otherwise). Let Y indicate the event that 2, 3, or 4 is rolled ...
Heights of women follow a normal distribution with mean μ=63.6 inches and standard deviation of σ=2.5 inches. Suppose random samples of 10 women are chosen and their mean height calculated. Please calculate the mean and ...
A 1995 study by the School of Public Health reported that 87?% of male students who live in a fraternity house are binge drinkers. The figure for fraternity members who are not residents of a fraternity house is 71?%, wh ...
The pH (acidity) of the liquor is critical for regulating dye uptake and hence the final color. There are 5 kettles, all of which receive dye liquor from a common source. Past data show that pH varies according to a Norm ...
If the coefficient of determination is 0.233, what percentage of the data about the regression line is explained? How do I go about solving this?
You've finally decided to retire at the ripe old age of 50, and due to some fancy investing, you have accumulated $750,000 in mutual funds. Based upon genetics, you're likely to live until you're 80. Since you've taken t ...
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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