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    Hi hi hi

    Can somebody help me with Q1 part b ii on the mei spec paper June 06.

    I tried to attach and add the paper but tsr kept failing on me.

    I don't understand where √60 comes from in the answer..?

    Thanks
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    can you just give a link ?
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    (Original post by the bear)
    can you just give a link ?
    http://www.mei.org.uk/files/papers/z206ju_xc9a.pdf
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    since we do not know the population standard deviation we have to use an unbiased estimate...
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    (Original post by the bear)
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    since we do not know the population standard deviation we have to use an unbiased estimate...
    I have no idea what you've done. But apparently there is a formula for it. Googled it put the numbers in and Voila! It's that
    x(bar)±z(SD/√n)

    Thanks for trying though!

    EDIT: looks like you've done something similar.. 😊
 
 
 
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