The Weight of a Product Is Normally Distributed $\bar { x }$

question 6

Essay

The weight of a product is normally distributed.A sample of 50 units is taken from a batch.The sample yielded the following results: $\bar { x }$ = 75kg and s = 10kg.
-Calculate a 99 percent confidence interval for $\mu$
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Definitions:

Base Amount

A reference value or starting point against which changes or adjustments are measured.

Vertical Analysis

A method of financial statement analysis in which each entry is listed as a percentage of a base figure within the same period, facilitating comparison and trend identification.

Intercompany Comparisons

The analysis or comparison of financial and operational data between different companies within the same industry or sector to evaluate relative performance.

Statement of Income

A financial document that reports a company's revenues, expenses, and profits or losses over a specific period, reflecting its operational performance.