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A point is selected at random on a line segment of length Z. What is the probability that the longer segment is at least twice as long as the shorter segment?
Statistics and Probability, Statistics
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Is it possible to have no (or very small) collinearity and correlation between variables, yet have the same R squared and Adjusted R squared values?
A researcher determines that students study an average of 60 15 (M SD) minutes per week. Assuming these data are normally distributed, what is the z score for students studying 45 minutes per week?
The probability that a shot will hit the target is 0.02. Successive shots are independent of each other. What is the probability that at least one out of four shots will hit the target?
You're trying to find out how many students who graduate with accounting degrees from large universities are employed at graduation. You design an experiment where you collect information on several variables from recent ...
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The standard deviation of the market-index portfolio is 45%. Stock A has a beta of 1.20 and a residual standard deviation of 55%. a-1. Calculate the total variance of stock A if its beta is increased by 0.20? (Do not ro ...
A researcher records the sound (in decibels) during a series of lessons taught by a substitute teacher at a local elementary school. In his study, he found that the sound was 20±2 (M±SD) decibels. Assuming the data are n ...
Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6 7 Stock X 4%7%-2%40%0%10%-1% Stock Y 2%-5%7%4%6%11%-4% Consider a portfolio of 10% stock X and 90% stock Y. What is the (population) standard deviation of po ...
Consider projects A and B with the following cash flows: C0 C1 C2 C3 A -$29 $18 $18 B -$54 29 29 What is the profitability index of each project? (Do not round intermediate calculations. Round your answers to 2 decimal ...
(NOTE: You will be limited to no more than 3 attempts for credit on this problem.) Rework problem 23 from section 4.1 of your text involving a basketball player's three point shooting. Assume that his shots are Bernoulli ...
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