Carlos wants to replicate a study where the highest lowest observed value is 13.8 while the lowest is 13.4. He wants to estimate the population mean µ to the margin of error of 0.025 of its true value.

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asked Apr 21, 2023 62.9k views

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Carlos wants to replicate a study where the highest lowest observed value is 13.8 while the lowest is 13.4. He wants to estimate the population mean µ to the margin of error of 0.025 of its true value. Using 99% confidence level, find the sample size n that he needs.

A. 87
B. 97
C. 107
D. 117