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I've uploaded on a ppt the table that I've been given to use.

I understand how to find out the result from the table if I get a z score of something like 1.25 but I don't get how to find it for a figure of something like 2.125. Can someone point me in the right direction please!

Thanks
lecture 8.ppt6516.7KB
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Blyts-_
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Original post by Blyts-_
I've uploaded on a ppt the table that I've been given to use.

I understand how to find out the result from the table if I get a z score of something like 1.25 but I don't get how to find it for a figure of something like 2.125. Can someone point me in the right direction please!

Thanks


The table shows that P(Z<2.12)=0.983P(Z<2.12)=0.983 and P(Z<2.13)=0.9834P(Z<2.13)=0.9834.

Since 2.125 is midway between 2.12 and 2.13 P(Z<2.125)=0.9832P(Z<2.125)=0.9832, near enough.

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