ria2389
ria2389 ria2389
  • 13-05-2019
  • Mathematics
contestada

Plz help me with this

Plz help me with this class=

Respuesta :

tramserran
tramserran tramserran
  • 13-05-2019

Answer:  B) 160

Step-by-step explanation:

Since the Standard deviation of 21 bins is 3 bins, then the first 7 bins falls in the first 2.5% edge of the bell curve.

2.5% of 21 times 1000 = (0.025)(21)(1000) = 160

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