Estimate the sampling error and standard error of the sample

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Andersen Windows makes Quality windows and the standard thickness of the glass is 0.375 inch with a standard deviation of 0.050 inch. A random sample of 50 windows yields a sample mean thickness of 0.390 inches.

  1. Estimate the Sampling error and Standard error of the sample mean.
  2. Estimate the Probability that it would exceed more than 0.390 inches. Is Andersen meeting up with their standards?

Reference no: EM132474273

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