rsingleton70 rsingleton70

06-02-2017
Mathematics

Answered

For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.

Verified Answer :

LammettHash LammettHash

06-02-2017

You're looking for \(k\) such that

\(\mathbb P(Z

A z-score table or any calculator with an inverse CDF functionality gives an answer of about

\(k\approx1.2816\)

For example, on a TI-83 calculator, you would use

invNorm(.90)

or

invNorm(.90, 0, 1)

Answer Link

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