PLEASE ANSWER ALL 1.A machine produces parts with lengths that are normally distributed with 𝜎 = 0.63. A sample of 11 pa

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answerhappygod
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PLEASE ANSWER ALL 1.A machine produces parts with lengths that are normally distributed with 𝜎 = 0.63. A sample of 11 pa

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PLEASE ANSWER ALL
1.A machine produces parts with lengths that are normallydistributed with 𝜎 = 0.63. A sampleof 11 parts has a mean length of 76.19.
(a) Give a point estimate for πœ‡. (Give your answer correctto two decimal places.)(b) Find the 99% confidence maximum error of estimatefor πœ‡. (Give your answer correct to three decimalplaces.)(c) Find the 99% confidence interval for πœ‡. (Giveyour answer correct to three decimal places.)
2. Consider a sampled population that is normallydistributed, with the given information. (Give your answers correctto two decimal places.)
n = 51, x = 77.3,and 𝜎 = 12.2(a) Find the 0.9 confidence interval for πœ‡.--------- to -------------
3. The sampled population is normally distributed, with thegiven information. (Round your answers to two decimal places.)
n = 12, x = 28.8,and 𝜎 = 5.6(a) Find the 0.95 confidence interval for πœ‡.----------- to ------------
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