Question

q22 , 26 , 30

16. If the specification limits are 2.230 to 2.250, 2.238, and s 0065, what percentage of the measurements would be out of specification? 22. If a population of measurements has a mean of2.45 inches and a standard deviation of.15 inches, a. Find the μ ± 3σ spread of measurements. b. What percentage of the measurements will lie within the values found in part (a)? c. If samples of size n 5 are taken from the population, between what values will 99.73% of the sample means fall? 26. In exercise 14, if the process mean is adjusted to 1.830 and the standard deviation is reduced to .006, find the percentage of measurements in each category. 30·The average measurement on a control chart is x-3.514, and the standard deviation of the measurements is s- .009. a. Find the percentage of measurements that are larger than 3.525. b. Find the percentage of measurements that are less than 3.500. c. What percentage of the measurements are between 3.510 and 3.520?

Answer 1