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Two regression equations have been developed for different predictions based on different samples of equal size. In one, r = .79 while in the other r = .58. In which situation will the more accurate predictions be made?
Statistics and Probability, Statistics
Suppose that the height (x), in inches of a 20 year old man is a normal random variable with a mean of 70 inches and standard deviation of 5.102 inches. What is the 97.5th percentile of all 20 year old men's heights?
Let X be a random variable with range RX = {-1, 0, 1} and let P(X = 1) = P(X = -1) = p/2 for some p ∈ [0, 1]. a) Compute P(X = 0). b) Compute the expectation E[X] and variance Var(X) of X as a function of p, and determin ...
Assume that the class consists of 45 percent freshmen, 20 percent sophomores, 20 percent juniors, and 15 percent seniors. Assume further that 50 percent of the freshmen, 50 percent of the sophomores, 25 percent of the ju ...
1. According to the latest poll, 750 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults who believe in global warming. Round your lower bound and upper b ...
Suppose you bought a five-year zero-coupon Treasury bond with $ 1000 face value for $800. . Answer the following questions: (a) What is the yield to maturity on the bond? (b) Assume the yield to maturity on comparable bo ...
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 ...
The following data represents rain fall (x) and yield of paddy per hectare (y) in a particular area. X 113 102 95 120 140 130 125 Y 1.8 1.5 1.3 1.9 1.1 2.0 1.7 Fit the regression equation x and y. Estimate Y when x= 145. ...
A shipment of 11 televisions sets contains 4 defective sets. A hotel purchases 7 of these televisions sets. a: In how many ways can a hotel purchase 7 and receive 2 of the defective sets? b: What is the probability that ...
1. Given the following capital project data Cost of automation system (invoice):$730,000 Transportation and installation:$140,000 Training:$100,000 Firm's WACC:9% Firm's tax rate:35% Depreciation 5 years, straight line L ...
Question: You are throwing a party and fill a bowl with 63 ounces of punch. Suppose the expected size of each cup of punch is 2 ounces and the standard deviation of the size of a cup of punch is A ounce and each cup is p ...
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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