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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- February 12th 2013, 11:55 PMalejandroThe 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

- February 13th 2013, 01:27 AMchiroRe: The Normal Distribution
Hey alejandro.

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