a tube of toothpaste contains 4,2 ounces. as people use it the amount remainin in any tube is random. assume the amount of toothpaste left in the tube uniform distribution.
a)how much toothpaste would u expect to be remaining in the tube
b)what is the standart deviation of the amounth remaining in the tube
c)what is the likelihood there is less than 3,0 ounce remaining in the tube
d)what is the probability there is more than 1,5 ounces reamining in the tube
2006-12-18 07:58:27 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The mean of the uniform distribution is the midpoint.
Mean = 2.1 ounces
The standard deviation of the uniform distribution is:
(b-a)/SQRT(12) = 4.2/SQRT(12)
The probability that there is less than 3.0 ounces is 3.0/4.2
The probability that there is more than 1.5 ounces is (4.1-1.5)/4.2
2006-12-18 08:17:42 · answer #1 · answered by Ranto 7 · 0⤊ 0⤋