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Answer : t
n= 9
s = 0.0246
99% confidence interval
Formula
tc = 3.355 ( using t-table )
99 % confidence interval is
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A machine produces metal pieces that are cylindrical in shape. A sample of pieces is taken, and the diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, and 1.03 centimeters. a. Find a 99% confidence interval for the mean diameter of pieces from this machine, assuming an approximately normal distribution. b. Find a 99% prediction interval for the mean diameter of pieces from this machine, assuming an approximately normal distribution.
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Consider a machine that produces metal pieces which are cylindrical in shape. We select a sample...
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Please, i need clear answer for this statistics question Problem 6 A machine produces metal pieces...
Please, i need clear answer for this statistics
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A machine produces metal pieces that are cylindrical in shape. A sample of pieces is taken, and the diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, and 1.03 centimeters. a. Find a 99% confidence interval for the mean diameter of pieces from this machine, assuming an approximately normal distribution. b. Find a 99% prediction interval for the mean diameter of pieces from this machine, assuming an approximately normal distribution.
Consider a machine that produces metal pieces which are cylindrical in shape. We select a sample of nine pieces and measure the diameters: 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, 1.03 The sample and sample standard deviation are T = 1.00556 and s = 0.02455, respec- tively. Give a 95% confidence interval for the true mean diameter, assume that the population is normal. A. (0.989,1.022] B. (0.978,1.033] C. (0.991,1.034] D. (0.987,1.024] E. none of the preceding
Please, i need clear answer for this statistics
question
Problem 6 A machine produces metal pieces that are cylindrical in shape. A sample of these pieces is taken and the diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01 and 1.03 centimeters. The sample mean and standard deviation for the given data are i-1.0056 and s = 0.0246. Assume normality. (a) Find a 99% confidence interval on the mean diameter (b) Compute a 99% prediction interval...
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