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# S1 Normal distribution quick question Watch

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1. 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
2. P(Z < (X-16)/0.64) = 0.025

Then solve to find X.
3. (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?
4. (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.
5. You need to use In order to standardise it.

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Updated: December 29, 2010
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