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Question: When we standardize the values of a variable, the distribution of standardized values has mean 0 and standard deviation 1. Suppose we measure two variables X and Y on each of several subjects. We standardize both variables and then compute the least-squares regression line. Suppose the slope of the least-squares regression line is -0.44. We may conclude that
(a) the intercept will also be -0.44.
(b) the intercept will be 1.0.
(c) the correlation will be 1/-0.44.
(d) the correlation will be 1.0.
(e) the correlation will also be -0.44.
What is the characteristic function of N? What is the mean and variance of N? What is the pmf of N? What is the probability that N is an even number?
suppose the data represent the inches of rainfall in april for a certain city over the course of 20 years.a determine
The answers are not provided properly for b to f Use Excel to Answer the Following Questions The price of a share of stock divided by the company's estimated future earnings per share is called the P/E ratio. High P/E ratios usually indicate "grow..
x1, x2, x3 are zero mean Gaussian random variables with STD=4. Let x1 and x2 be independent and x3= a*x1+b*x2. Find the constants “a” and “b” such that the correlation between x1 and x3 is 0.3. What is the correlation between x3 and x2?
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Problem: What is the probability that a randomly chosen American adult is a member of one of the two major political parties (Republicans and Democrats)?
given a sample size of 34 with sample mean 660.3 and sample standard deviation 104.9 we perform the following
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