2 years ago

5 x 20 x a³ = 72900 what does a equal

Mathematics

1 answer:

Basile [38]2 years ago

3 0

Answer:

Step-by-step explanation:

a^3=72900/100

a=(729)^1/3

a=9

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Answer:

Step-by-step explanation:

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A manufacturer produces piston rings for an automobile engine. It is known that ring diameter is normally distributed with milli

skelet666 [1.2K]

Complete Question:

A manufacturer produces piston rings for an automobile engine. It is known that ring diameter is normally distributed with ? = 0.001 millimeters. A random sample of 15 rings has a mean diameter of \bar{X}= 74.106. Construct a 99% two-sided confidence interval on the true mean piston diameter and a 95% lower confidence bound on the true mean piston diameter.

(Round your answers to 3 decimal places.)

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Answer:

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Step-by-step explanation:

Check the attached file for the complete solution

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