SOLUTION: A machine produces parts with lengths that are normally distributed with 𝜎 = 0.66. A sample of 14 parts has a mean length of 75.84.
(a) Give a point estimate for 𝜇. (Give yo
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-> SOLUTION: A machine produces parts with lengths that are normally distributed with 𝜎 = 0.66. A sample of 14 parts has a mean length of 75.84.
(a) Give a point estimate for 𝜇. (Give yo
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Question 1187391: A machine produces parts with lengths that are normally distributed with 𝜎 = 0.66. A sample of 14 parts has a mean length of 75.84.
(a) Give a point estimate for 𝜇. (Give your answer correct to two decimal places.)
(b) Find the 99% confidence maximum error of estimate for 𝜇. (Give your answer correct to three decimal places.)
(c) Find the 99% confidence interval for 𝜇. (Give your answer correct to three decimal places.)
Lower Limit
Upper Limit
You can put this solution on YOUR website! point estimate is the mean of 75.84
99%CI half-interval is z(0.995)*sigma/sqrt(n)
=2.5758*0.66/sqrt(14)=0.454, this is the maximum error
the 99% interval is (75.386, 76.294)
