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For a confidence level of 95% and accuracy ± 5%, the number of cycles to be timed in a time study is equal to:
Where, N = Number of observations taken; X = X1, X2, ...., XN are individual observations. What is the value of K? 
  • a)
    10  
  • b)
    20  
  • c)
    30  
  • d)
    40 
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
For a confidence level of 95% and accuracy ± 5%, the number of cy...
For 95% confidence level
K = 2 
S = Accuracy = 0.05 
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For a confidence level of 95% and accuracy ± 5%, the number of cycles to be timed in a time study is equal to:Where, N = Number of observations taken; X = X1, X2, ...., XN are individual observations. What is the value of K?a)10 b)20 c)30 d)40Correct answer is option 'D'. Can you explain this answer?
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