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Mathematics 17 Online
OpenStudy (anonymous):

A random sample of 130 students is chosen from a population of 4,500 students. If the mean IQ in the sample is 120 with a standard deviation of 5, what is the 99% confidence interval for the students' mean IQ score?

OpenStudy (anonymous):

@Nurali

ganeshie8 (ganeshie8):

where are u stuck at ?

ganeshie8 (ganeshie8):

know how to find the Margin of error ?

ganeshie8 (ganeshie8):

Margin of error = \(Z^* \dfrac{s}{\sqrt{~n}} \)

ganeshie8 (ganeshie8):

seen this formula before ?

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