If 83.53% of the data can be found between the z-scores shown below. What is the value of a, to the nearest hundredth?

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- Feb 13th 2013, 12:55 AMalejandroThe Normal Distribution
If 83.53% of the data can be found between the z-scores shown below. What is the value of a, to the nearest hundredth?

Attachment 26991

- Feb 13th 2013, 02:27 AMchiroRe: The Normal Distribution
Hey alejandro.

Hint: P(a < Z < b) = P(Z < b) - P(Z < a).