What is the point estimate

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For a data set obtained from a random sample, n = 81 and x = 48.25. It is known that σ = 4.8.

  1. What is the point estimate of μ? Round to two decimal places
  2. Make a 95% confidence interval for μ. What is the lower limit? Round to two decimal places.
  3. Make a 95% confidence interval for μ. What is the upper limit? Round to two decimal places.
  4. What is the margin of error of estimate for part b? Round to two decimal places.

Reference no: EM131538077

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