Assume that a vertical line is drawn through a normal distribution at each of the following z-score locations. For each, determine if the tail is on the left or right and find the proportion of the distribution that is located in the tail.  1. z = +1.80 2. z = +0.60 3. z = -0.40 4. z = -1.25

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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.