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    How do you solve

    The random vairable Z is distributed such that Z~N(0,1). Find this probablility:

    P(lZl>2.4)?

    It's a textbook question.

    lZl is modulus Z

    Thank you!

    (I am finding it difficult to write out >Z> since -2,4>Z>2.4 just does not make sense)
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    Which area is it in S2?
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    you need to look for areas to the left of z = -2.4 and to the right of z = 2.4 and add them up.
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    (Original post by DanF2000)
    Which area is it in S2?
    Normal distribution
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    (Original post by Jellyxx)
    How do you solve

    The random vairable Z is distributed such that Z~N(0,1). Find this probablility:

    P(lZl>2.4)?

    It's a textbook question.

    lZl is modulus Z

    Thank you!

    (I am finding it difficult to write out >Z> since -2,4>Z>2.4 just does not make sense)
    P(|Z| > 2.4) = 1-P(|Z| < 2.4)

    = 1- (2P(Z < 2.4) -1)

    I think this is right but I'm not 100% sure so please correct me if I'm wrong

    Posted from TSR Mobile
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    (Original post by the bear)
    you need to look for areas to the left of z = -2.4 and to the right of z = 2.4 and add them up.

    YOU'RE RIGHT DD I AM MINDBLOWN by the realisation thanks!
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    (Original post by Jellyxx)
    YOU'RE RIGHT DD I AM MINDBLOWN by the realisation thanks!
    no worries champ

    :beard:
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    Just a quick notice: my teacher always tells me to draw the normal distribution graph. It might be tedious, but it lets you know what you need to be looking for.
 
 
 
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