Answer:
a) The mean number of radioactive atoms that decay per day is 81.485.
b) 0% probability that on a given day, 50 radioactive atoms decayed.
Step-by-step explanation:
Poisson distribution:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given interval.
a. Find the mean number of radioactive atoms that decayed in a day.
29,742 atoms decayed during 365 days, which means that:

The mean number of radioactive atoms that decay per day is 81.485.
b. Find the probability that on a given day, 50 radioactive atoms decayed.
This is P(X = 50). So

0% probability that on a given day, 50 radioactive atoms decayed.
Answer: $37.20
Step-by-step explanation:
Just add those 2 amounts together
Answer:
6
Step-by-step explanation:
Answer:
Step-by-step explanation:
2 Loaves of Bread is = 2.25*2 = 4.5 cups
She used the remaining flour to make 48 muffins.
48/24 = 2
3.25*2 = 6.5 cups
6.5 cups + 4.5 cups = 11 cups