dondre54
06.08.2021 •
Mathematics
The mean output of a certain type of amplifier is 335335 watts with a standard deviation of 1212 watts. If 7070 amplifiers are sampled, what is the probability that the mean of the sample would be greater than 338.4338.4 watts
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Ответ:
.3885 = 38.85%
Step-by-step explanation:
*Probability-Above38.85%
Z1=0.28Z2=-27.92
*x-1338.4
*µ335
*σ12
Ответ:
None of them have perpendicular lines except for the blue one if I am seeing right.