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In a recent​ year, the total scores for a certain standardized test were normally​ distributed, with...

In a recent​ year, the total scores for a certain standardized test were normally​ distributed, with a mean of 500 and a standard deviation of 10.3. Answer parts ​(a)dash​(d) below. ​(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 492.

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Answer #1

Here it is given that distribution is normal with mean=500 and sd=10.3

a. Now we need to find

Now as distribution is normal so we can convert x to z

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