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7 months ago
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in this file :
3.9. Population variance known, z-score_exercise_solution.xlsx
https://www.filepicker.io/api/file/wTJ2o2jMRpOgGxTsuPjR
the following equations missing parenthesis when calculating confidence interval :
=E15-E17*E19
=E15+E17*E19
it should be :
=E15-(E17*E19)
=E15+(E17*E19)

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1 Answer

365 Team 7 months ago
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Hi Hamada,
Thanks for reaching out.
When you have a mathematical equation or a formula in Excel, multiplication and division are prioritized.
Therefore, even without the brackets, E17*E19 will be executed before the plus/minus sign.
Best,
The 365 Team

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