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The mean score of 81 psychology students is 95.5 and the SD is 9, what is...

The mean score of 81 psychology students is 95.5 and the SD is 9, what is the standard error of the mean? please show the steps.

Math   Statistics-And-Probability   
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Answer #1

Solution :

Given that ,

mean = = 95.5

standard deviation = = 9

sampling distribution of standard deviation

=  / n = 9/ 81

standard error = = 1

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