When finding probabilities for a normal distribution (less than, greater than, or in between), you need to be able to write probability notations. Practice these skills by writing probability notations for the following problems.
Sample questions
Write the probability notation for the area shaded in this Z-distribution.
Answer:
Looking at the graph, you see that the shaded area represents the probability of all z-values of 2 or less. The probability notation for this is
Write the probability notation for the area shaded in this Z-distribution.
Answer:
Looking at the graph, you see that the shaded area represents the probability that Z is between 0 and 2, expressed as
Write the probability notation for the area shaded in this Z-distribution.
Answer:
Looking at the graph, you see that the shaded area represents the probability of a z-value of –2 or higher, expressed as
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