raul20030603
10.01.2021 •
Mathematics
10. Gavin collects a certain type of seashell. He has 160 seashells. The seashells’ weights are distributed normally, with a mean of 120 grams and a standard deviation of 26 grams.
How many of the seashells weigh at least 68 grams?
A. 156
B. 134
C. 152
D. 109
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Ответ:
Ответ:
1344.
Step-by-step explanation :
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