The scores in an exam were normally distributed with a mean of 50 and a standard deviation of 10 . What is the probability that a randomly selected test taker scored less than 75 ? ( Do not round)
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Step 1: Standardize the value 75 using the formula z = (X - μ) / σ, where X is the value (75), μ is the mean (50), and σ is the standard deviation (10). Show more…
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