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yashar806

  • 3 years ago

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  1. yashar806
    • 3 years ago
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  2. mathgeek!
    • 3 years ago
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    a)

  3. yashar806
    • 3 years ago
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    how?

  4. tomo
    • 3 years ago
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    |dw:1363388359595:dw|

  5. tomo
    • 3 years ago
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    so we want to find that inside probability. so like the last problem we need to find two z scores.

  6. yashar806
    • 3 years ago
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    where did you get that 3 and 5 ?

  7. tomo
    • 3 years ago
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    mean mu my bad

  8. tomo
    • 3 years ago
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    |dw:1363388474676:dw|

  9. yashar806
    • 3 years ago
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    ok

  10. yashar806
    • 3 years ago
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    you mean i have to look up z score between -1 to 1 ?

  11. yashar806
    • 3 years ago
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    hello?>

  12. tomo
    • 3 years ago
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    yeah, one sec

  13. yashar806
    • 3 years ago
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    are you there?

  14. tomo
    • 3 years ago
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    yeah, I'm just a bit confused.

  15. tomo
    • 3 years ago
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    right now I think that we need to do 1-z1-z2 z1 = (y-mu)/(sigma) the top y value i think is mu+1. sigma is 4. z1 = (mu+1-mu)/4 = 1/4 now for y2 the bottom y value i think is mu-1. sigma is 4. z2 = (mu -1-mu)/4 = -1/4 so 1 -1/4 + 1/4 = 1 but its not an answer, which confuses me.

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