Given the following sample XPATH example query in PostgreSQL, what would be the result:SELECT xpath_exists('/user/text()', '');O xpath{}(1 row)O xpathO{TestUser123}(1 row)Oxpath_existst(1 row)xpath_existsf(1 row)

To solve this query and understand the result, you need some basic knowledge of XML, XPath, and…

Answered: Given the following sample XPATH…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose a special type of small data processing firm is so specialized that some have difficulty making a profit in their first year of operation. ky4(1-y)³, 0
A potato chip company produces a large number of potato chip bags each day and wants to investigate whether a new packaging machine will lower the proportion of bags that are damaged. The company selected a random sample of 150 bags from the old machine and found that 15 percent of the bags were damaged, then selected a random sample of 200 bags from the new machine and found that 8 percent were damaged. Let pˆOp^O represent the sample proportion of bags packaged on the old machine that are damaged, pˆNp^N represent the sample proportion of bags packaged on the new machine that are damaged, pˆCp^C represent the combined proportion of damaged bags from both machines, and nOnO and nNnN represent the respective sample sizes for the old machine and new machine. Have the conditions for statistical inference for testing a difference in population proportions been met? No, the condition for independence has not been met, because random samples were not selected. A No, the…
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28.
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Given the following sample XPATH example query in PostgreSQL, what would be the result: SELECT xpath_exists('/user/text()', ''); xpath 0 (1 row) Oxpath {TestUser123} (1 row) Oxpath_exists t (1 row) Oxpath_exists f (1 row)