explain what is the z-value (aka z-score). What is the purpose of calculating the z-score? Tell us in your own words and with your own examples, how can we calculate
a. Converting x values to the corresponding z values.
b. Finding the area between the mean and a point to its right.
c. Finding the area between the mean and a point to its left.
d. Finding the area between two points on different sides of the mean
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The normal random variable of a standard normal distribution is called a standard score or a z-score. Every normal random variable X can be transformed into a z score via the following equation:
z = (X - μ) / σ
where X is a normal random variable, μ is the mean of X, an...
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