A machine produces parts with lengths that are normally distributed with σ = 0.55. A sample...

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A machine produces parts with lengths that are normally distributed with σ = 0.55. A sample...

A machine produces parts with lengths that are normally distributed with σ = 0.55. A sample of 14 parts has a mean length of 76.75.

(a) Give a point estimate for μ. (Give your answer correct to two decimal places.)

(b) Find the 95% confidence maximum error of estimate for μ. (Give your answer correct to three decimal places.)

(c) Find the 95% confidence interval for μ. (Give your answer correct to three decimal places.)

Lower Limit
Upper Limit

math Statistics-And-Probability

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toy d Pont estimg t. 96 ip

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