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The breaking strengths of cables produced by a certain manufacturer have a standard deviation of pounds. a random sample of newly manufactured cables has a mean breaking strength of pounds. based on this sample, find a confidence interval for the true mean breaking strength of all cables produced by this manufacturer. then give its lower limit and upper limit. carry your intermediate computations to at least three decimal places. round your answers to one decimal place. (if necessary, consult a list of formulas.) lower limit: upper limit:

Sagot :

The breaking strengths of cables produced by a certain manufacturer have a standard deviation of pounds. a random sample of newly manufactured cables has a mean breaking strength of pounds are 1821.9.

What are the cables?

The cables are the wires that provide the connection.

  • Round your solutions to 1 decimal place pattern imply = 1800 fashionable error = zs = 2.576[85/sqrt(100)] = 0.2576*eighty five = 21.896
  • 99% CI: 1800-21.896 < u < 1821.896
  • 99% CI: 1778.1 < u < 1821.9.

Read more about the cables :

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