When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000 radioactive atoms decayed to 979,280 radioactive​atoms, so 20,720 atoms decayed during 365 days.   a. Find the mean number of radioactive atoms that decayed in a day.   b. Find the probability that on a given​ day, 50 radioactive atoms decayed.

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000 radioactive atoms decayed to 979,280 radioactive​atoms, so 20,720 atoms decayed during 365 days.
 
a. Find the mean number of radioactive atoms that decayed in a day.
 
b. Find the probability that on a given​ day, 50 radioactive atoms decayed.
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Over 365​ days, 1,000,000 radioactive atoms decayed to 979,280 radioactive​atoms, so 20,720 atoms decayed during 365 days.

 

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