Mean

A student's food the mean of 50 items as 38.6. When checking the work, he found that he had taken one item as 50 to read as 40 in these circumstances correctly. What should be the correct mean?

Correct answer:

m =  38.4

Step-by-step explanation:

n=50 m1=38.6 m=(n m150+40)/n=(50 38.650+40)/50=38.4



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Math student
In a normal distribution with a mean of 30 what percentage of the scores would be above the mean?

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