Hello, I would like to check my work. I used  invNorm on my calculator. Is there an excel formula? Can you please explain how to solve this in detail? Thank you!  You want to obtain a sample to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, you believe the population standard deviation is approximately 6.5. You would like to be 90% confident that your estimate is within 2 of the true population mean. How large of a sample size is required? n =  Use technology to find z-score. Give your answer in whole people. Make sure you use the correct rounding rule for samples size.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Hello, I would like to check my work. I used  invNorm on my calculator. Is there an excel formula? Can you please explain how to solve this in detail? Thank you! 

You want to obtain a sample to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, you believe the population standard deviation is approximately 6.5. You would like to be 90% confident that your estimate is within 2 of the true population mean. How large of a sample size is required? 

n = 

  • Use technology to find z-score.
  • Give your answer in whole people.
  • Make sure you use the correct rounding rule for samples size.
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