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The GMAT scores of all examinees who took that test this year produced a distribution that is approximately normal with a mean of 430 and a standard deviation of 34.The probability that the score of a randomly selected examinee is between 400 and 480, rounded to three decimal places, is:

Sagot :

SOLUTION:

Case: Probability from a normal distribution

Given: Mean = 430, Standard deviation: 34

Required: To find the probability that the score of a randomly selected examinee is between 400 and 480

Method:

Steps

Step 1: Get the z-score with the lesser value:

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Final answer:

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