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July 31, 2014

Homework Help: STATISTICS

Posted by Mason on Wednesday, August 10, 2011 at 12:50pm.

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.

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