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MathSofiya

  • 2 years ago

Statistics: \[\mu=28\] \[\sigma=5\] If \[P(z\le z_0)=0.12\] How do I use the attached table to come to the conclusion that \[z_0=-1.175\]?

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  1. MathSofiya
    • 2 years ago
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  2. Zarkon
    • 2 years ago
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    look up .12 in the middle of the table

  3. Zarkon
    • 2 years ago
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    or the numbers closest to .12

  4. MathSofiya
    • 2 years ago
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    You mean here?

  5. Zarkon
    • 2 years ago
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    no...the middle of the table...middle of the paper

  6. MathSofiya
    • 2 years ago
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    No I think you mean here

  7. MathSofiya
    • 2 years ago
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    right?

  8. Zarkon
    • 2 years ago
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    no

  9. MathSofiya
    • 2 years ago
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    Where?

  10. Zarkon
    • 2 years ago
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    middle! ... don't look along the edge yet

  11. MathSofiya
    • 2 years ago
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    here?

  12. Zarkon
    • 2 years ago
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    yes...but there is another number that is really close to .12

  13. MathSofiya
    • 2 years ago
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    .1190

  14. Zarkon
    • 2 years ago
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    yes...what are the z values for those 2 numbers

  15. MathSofiya
    • 2 years ago
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    but how did they come to the conclusion that z_0=-1.175?

  16. Zarkon
    • 2 years ago
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    answer my last question first

  17. MathSofiya
    • 2 years ago
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    -1.1 and .07 and .08....ah I see Therefore -1.75 since it between .1190 and .1210

  18. Zarkon
    • 2 years ago
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    -1.17 and -1.18 take average of the two gives -1.175

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