MCQOPTIONS
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				| 1. | 
                                    Range of probability distribution with 99.74% lies within | 
                            
| A. | (+ 3σ and -3σ) | 
| B. | (+ 4σ and -4σ) | 
| C. | (+ 1σ and -1σ) | 
| D. | (+ 2σ and -2σ) | 
| Answer» B. (+ 4≈ì√â and -4≈ì√â) | |