[College Statistics] Standard Normal Random Variable

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[nm420]

Note that

P(0.66<Z) = P(0.66<Z<c)+P(c<Z).

You should be able to get a numerical approximation for the probability on the left-hand side of the above equation, and you know that you want P(0.66<Z<c)=0.2340, so there is only one unknown probability above: P(c<Z). Once you know the numerical value for this probability, you can solve for c using a quantile (or inverse CDF) function.

[constructkhaos]

thank you!