Probabilities - Bell Telephone
The Bell telephone co. surveyed an apartment building with 500 units to find out who subscribes to their service. Turns out 70% of the units use Bell's service.
Find the probability that less than 340 units are using Bell services so we are looking for:
P(X<340)
Z= 340-350/10.25=-0.98
https://brainmass.com/statistics/probability/determining-probability-binomial-distribution-3397
Solution Preview
From the example, we know that X~(350,10.25^2)
we transfer it into Z= 340-350/10.25=-0.9756
Therefore the ...
Solution Summary
The solution addresses the Bell telephone co. surveyed an apartment building with 500 units to find out who subscribes to their service. Turns out 70% of the units use Bell's service.
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