Help with Stat?

Fact: the region under the standard normal curve that lies to the left of −1.42 has area 0.0778038.

Without consulting a table or a calculator giving areas under the standard normal curve, determine the area under the standard normal curve that lies to the right of 1.42.

answer: 

Could you explain to me if possible how to solve this and what the answer should be

1 Answer

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  • coreyA
    Lv 6
    2 months ago

    The area under the normal curve is symmetric.  So the area under the curve from -∞ to -1.42 (the left of -1.42) is .0778038, then the area from 1.42 to ∞ (the right of 1.42) is also 0.0778038.  This is of course assuming that -1.42 and 1.42 are symmetric about the mean.

    • Skylar2 months agoReport

      Hmm ok thank you I think I get it now

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