Chapter Review
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Recall the areas under a normal curve.
0.0015
x≤ μ- 3σ To find this probability, we will highlight the percent of data which is less than 3 standard deviations below the mean.
Therefore, the probability that a randomly selected x-value from the distribution is less than μ- 3σ equals 0.15 %, which can be also written as 0.0015.