(y4) 3 Please does anyone know what this one might be
1 answer:
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935 of the boxes will weigh 25 oz or less.
The z-score for this value is
Looking this up in a z-table (http://www.z-table.com) we see that the probability of something being less than or equal to this value (the area under the curve to the left) is 0.7794.
Multiply this probability by the number of items:
0.7794(1200) = 935.28 ≈ 935.
The z-score for this value is
Looking this up in a z-table (http://www.z-table.com) we see that the probability of something being less than or equal to this value (the area under the curve to the left) is 0.7794.
Multiply this probability by the number of items:
0.7794(1200) = 935.28 ≈ 935.