Asked by Mason

The number of boxes of girl scout cookies sold by each of the girl scout in a city has a distribution which is approximately normal with a mean=75 boxes and a standard deviation=30 boxes....

1.) find the probability that scout chosen at random sold between 60 and 90 boxes.

2.) Find the probability that the sample mea number of boxes of cookies sold by a random sample of 36 scouts is between 60 and 90 boxes.

My answers:
1.) .3830
2.) .9974

Just need to know if I am getting the right answers and if not then need the correct way to calculate....Im getting confused.

Answered by PsyDAG
Both answers are right! Good work!
Answered by Sosena
78% of U.S. homes have a telephone answering device. In a random sample of 268 homes, what is the probability that fewer than 53 do not have a telephone anwering device?
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