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S1 Normal distribution quick question Watch

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    Stuck! wondering if anyone could help me... I've been told the steps, but I don't know why I'm doing it so they don't make sense to me.

    The random variable X has a normal distribution with mean 16 and variance 0.64. find x such that P(X< x) = 0.025
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      P(Z < (X-16)/0.64) = 0.025

      Then solve to find X.
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      (Original post by im so academic)
      P(Z < (X-16)/0.64) = 0.025

      Then solve to find X.
      How would I solve to find x? There's no corresponding value for 0.025 in the normal distribution table?
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        (Original post by duskflower)
        How would I solve to find x? There's no corresponding value for 0.025 in the normal distribution table?
        Look at the percentage points table.
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        You need to use z = \frac{x - \mu}{\sigma} In order to standardise it.
       
       
       
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