Question: Let X be a normal random variable with a mean of -2.40 and a standard deviation of 4.82. a) Calculate the corresponding standardized value (z)

Let X be a normal random variable with a mean of -2.40 and a standard deviation of 4.82.

a)Calculate the corresponding standardized value (z) for the pointx = 4.2. Give your answer to 2 decimal places.

b) The area under the standard normal probability density function from negative infinity to z is interpreted as the probability that the random variable is:

less than or equal to z
equal to z
greater than or equal to z

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