Concept explainers
Statistical Literacy of the following random variables, which have only nonnegative values: z, t, chi-square?
The random variable that has only non-negative values among z, t, chi-square.
Answer to Problem 1CR
Solution:
The random variable that has only non-negative values is chi-square.
Explanation of Solution
Among all the given three random variable z, t and chi-square, the chi-square variables have only non-negative values because chi-square distribution is right skewed.
If we graph the family of chi-square on a Cartesian coordinate system (x, y) coordinate plane, among three distributions mentioned only chi-square lie entirely in 1st quadrant, which have both x and y as positive.
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Chapter 11 Solutions
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