MCQOPTIONS
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| 1. |
The standard normal probability distribution has mean equal to 40, whereas the value of random variable x is 80 and the z-statistic is equal to 1.8 then the standard deviation of standard normal probability distribution is |
| A. | 120 |
| B. | 80 |
| C. | 40 |
| D. | 20 |
| Answer» E. | |