hbhdnjdndj1867
31.07.2019 •
Mathematics
Agiven distribution has a mean of 50. a score of 43 has a corresponding z-score of l.94. what is the standard deviation (to the nearest hundredth)?
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Ответ:
u= mean = 50
x = score = 43
z= 1.94
so
1.94 = 43-50 /sd
1.94 = -7sd
so 1 sd = 1.94/ -7 = -3.6
Ответ:
72
Step-by-step explanation:
90 = 125%
90 ÷ 5 = 25% = 18
18 x 4 = 72