In: Statistics and Probability
There is a process of laminating the gum at 0.08 inches and with a deviation of .01. What is the probability that a rubber flake will come out with more than 0.09 if you take a sample 5 flakes?
Solution :
Given that,
mean =
= 0.08
standard deviation =
= 0.01
n=5
=
=0.08
=
/
n = 0.01 /
5 = 0.004
P( > 0.09) = 1 - P(
< 0.09)
= 1 - P[(
-
) /
< (0.09-0.08) / 0.004]
= 1 - P(z < 2.5)
Using z table
= 1 - 0.9938
probability= 0.0062