statistics question

label Statistics
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schedule 1 Day
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find the z score for which 88% of the distribution lies between -z and z

Jun 22nd, 2015

Thank you for the opportunity to help you with your question!

88% between -z and z mean 44% ABOVE the mean and 44% BELOW the mean

44% above the mean = 50 + 44 = 94% = 0.94

According the z chart, 0.94 corresponds to a z value of 1.56

44% belowe the mean = 50 - 44 = 6% = 0.06

The z value for 0.06 is -1.56

Therefore,

z = +/- 1.56

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 22nd, 2015

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Jun 22nd, 2015
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Jun 22nd, 2015
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