2. For a Normal Distribution where u = 3 and o = 3, where does approximately 95% of the scores fall between?

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A: Standard Normal Distribution Graph:

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A: The standard normal variable z has mean 0 and standard deviation 1.

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A: The normal distribution is a continuous distribution, which is symmetric about the mean.

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A: We have given that.   X~N( μ , ?^2 )   μ =0 , ? =1   Z-score =( x - μ )/?

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.