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The Medical College Admission Test (M.AT) is known to be Normally distributed with a mean of...

The Medical College Admission Test (M.AT) is known to be Normally distributed with a mean of 500 and standard deviation 6.5. Describe the distribution of the mean score for a simple random sample of 10 test results.

Math   Statistics-And-Probability   
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Answer #1

Solution :

Given that ,

mean = = 500

standard deviation = = 6.5

n = 10

sample distribution of sample mean is ,

=

= 500

sampling distribution of standard deviation

=  / n = 6.5/ 10

= 2.055

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