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Social ScienceUse the standard normal distribution (aka z distribution where mu = 0 and sigma = 1) to determine the values of Z that will give you the middle 95% of the data.Note that each answer above requires TWO values of Z.
Use the standard normal distribution (aka z distribution where mu = 0 and sigma = 1) to determine the values of Z that will give you the middle 95% of the data.
Note that each answer above requires TWO values of Z.
Expert Answer
The middle 95% of the data is,
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a=1-0.95 0.05 a - 0.025 2
Hence, 0.025 in each tail.
Step-by-step procedure to obtain the values of Z that will give you the middle 95% of the data using MINITAB:
- Choose Graph > Probability Distribution Plot choose View Probability > OK.
- From Distribution, choose ‘Normal’ distribution.
- Click the Shaded Area
- Choose Probability and Middle Tail for the region of the curve to shade.
- Enter the Probability ...
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Distribution Plot Normal, Mean=0, StDev-1 095 0.4 0.3 0.2 0.1 00 -1960 0 1960 Density
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