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moonlight93

  • one year ago

Find the z score boundaries that separate a normal distribution as described in each of the following scores? What formula should I use? (can someone show me how to do one of them, I'll do the rest). A. The middle 30% from the 70% in the tails. B. The middle 40% from the 60% in the tails. C. The middle 50% from the 50% in the tails. D. The middle 60% from the 40% in the tails

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  1. jim_thompson5910
    • one year ago
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    The formula involves a lot of complicated calculus. So you're best off using a calculator

  2. jim_thompson5910
    • one year ago
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    do you have a TI83 or TI84?

  3. moonlight93
    • one year ago
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    TI-84, yes.

  4. moonlight93
    • one year ago
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    TI-84 Plus

  5. jim_thompson5910
    • one year ago
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    ok great

  6. jim_thompson5910
    • one year ago
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    let's start off with a drawing

  7. jim_thompson5910
    • one year ago
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    draw the normal bell curve |dw:1443833806590:dw|

  8. jim_thompson5910
    • one year ago
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    `A. The middle 30% from the 70% in the tails. ` so we have 0.7/2 = 0.35 in each tail |dw:1443833837723:dw|

  9. jim_thompson5910
    • one year ago
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    to find the z score that corresponds to this point here |dw:1443833908363:dw| we will use the `invNorm` function

  10. jim_thompson5910
    • one year ago
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    do you know how to find that function?

  11. anonymous
    • one year ago
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    welche Art von einer Gleichung ist das? Ich verstehe nicht, wat die quations ist

  12. anonymous
    • one year ago
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    @RavenDarkwood200 salut Raven , vorbiți germana ?

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