Answer:
Comparing Distributions: Z Test
The simplest way to compare two distributions is via the Z-test. The error in the mean is calculated by dividing the dispersion by the square root of the number of data points. In the above diagram, there is some population mean that is the true intrinsic mean value for that population.
Step-by-step explanation:
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Answer: 6 pieces
Step-by-step explanation:
Step-by-step explanation:
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Note that the given (15•3)-20 involves multiplication and subtraction. The mult. must be carried out first. Thus, (15•3)-20 = 45-20, or (3*15)-20. Only answer B is equivalent to (15•3)-20.