Undergraduate GPAS It is desired to estimate the mean GPA of each undergraduate class at a large university. How large a sample is necessary to estimate the GPA within 0.27 at the 95% confidence level? The population standard deviation is 1.39. If needed, round your final answer up to the next whole number. The university needs at least a sample of students. X

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**Undergraduate GPAs:** It is desired to estimate the mean GPA of each undergraduate class at a large university. How large a sample is necessary to estimate the GPA within 0.27 at the 95% confidence level? The population standard deviation is 1.39. If needed, round your final answer up to the next whole number.

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**Text Box:** "The university needs at least a sample of [ ] students."

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Transcribed Image Text:**Undergraduate GPAs:** It is desired to estimate the mean GPA of each undergraduate class at a large university. How large a sample is necessary to estimate the GPA within 0.27 at the 95% confidence level? The population standard deviation is 1.39. If needed, round your final answer up to the next whole number. [Input box for the answer] **Text Box:** "The university needs at least a sample of [ ] students." **Graph/Diagram Explanation:** - There is no graph or diagram in the image. - The image includes an input box for the answer, and a refresh button next to it for resetting the input.
Expert Solution
Step 1: Introduction

Given:

Confidence level = 0.95

alpha equals 1 minus 0.95 equals 0.05

Here, the margin of error (E) = 0.27

Population standard deviation= sigma=1.39

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