standard deviation

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Consider that for a process s bar (average standard deviation of 50 samples each of size 4) is found to be 10.04. The value of c4 (corresponding to sample size of .4) is .92. What is the estimated value of process standard deviation?

  1. 10.91 (s bar/ c4 is an unbiased estimator of standard deviation)

  2. 11.89

  3. 12.67

  4. 9.67 WRITE MY ESSAY TODAY AT LESS THAN $15 AND BEST QUALITY BEST WAY TO WRITE A 5 STAR PERSUASIVE ESSAY

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